Normal basal temperature before menstruation. Temperature standards at different stages. One review for Basal body temperature before period

Basal temperature is an important indicator that can visually display the condition of a woman. The temperature should be measured with strict observance of all recommendations.

Every woman who closely monitors her health should know that her body is completely controlled by hormones. that can influencehuman temperature. Having learned to measure it, you can accurately calculate important days. It should be measured every day, only then it will be possible to draw up a cyclic calendar, it is well guided in cases:

• the right time for successful conception
• conception
• definition of gynecological inflammation
• talk about hormonal imbalance
• talk about the imminent onset of menstruation

Laying a thermometer and measuring in the armpits will be ineffective. It is best to measure rectal temperature with a simple electronic pharmacy thermometer and only on the mucous membranes of the body.

The temperature in the intestines should be measured in the supine position immediately after waking up without even getting out of bed. For this reason, the thermometer should be prepared in advance and placed next to the bed. An electronic thermometer will determine the temperature in seconds.

Basal temperature during pregnancy

• If a fertilization has occurred, the temperature level will have slightly different values. Rectal temperature in the early stages serves as a peculiar way diagnosing conception
• If you are completely sure that pregnancy has occurred, then the decrease in rectal temperature from the mark 37 speaks of any threats of disruption
• Do not assume that such a measurement of the temperature level - exhausting job. After all, not every woman needs to do this regularly. The temperature is supposed to be measured by those who have repeatedly faced threats and miscarriages in their lives.

The norm of basal temperature before menstruation

Remember that taking medications, drinking alcohol the night before, or being unhealthy can change your body temperature.

Before menstruation, there is a change in temperature in the female body. You can trace this by noticing a slight increase from 36.6 to 37.6 maximum (that is, one degree). This temperature can be supplemented by some sensations:

• breast tenderness
• headache
• nervousness and irritability

The days preceding menstruation are characterized by increased temperature and these days are the most unfavorable for conception. You can afford unprotected sex because of the low chance of getting pregnant.

Remember that basal temperature should be measured lying down. Any activity can break it and mislead you.

If you measure the basal temperature for several months in a row, you can accurately study the characteristics of your body and know exactly the days preceding the menstrual cycle.

When does the basal temperature rise and fall before menstruation?

Basal temperature is a proven gynecological method that has been successfully used for decades and hundreds of years. Hormonal female background (sex hormones) affect how the temperature changes with the advent of each stage of the cycle. The temperature becomes especially important before the onset of critical days.

Temperature data can give a lot of information to doctors, and even to the woman herself, about what is happening with her body. For example, this way you can determine the time of the release of the egg - the time most favorable for conception or even about the pregnancy itself. Not infrequently, the temperature "screams" about the presence of an inflammatory process or disease. But most often, or rather every month, she warns us about the approach of menstruation.

• As a detailed observation of the female body shows, the body temperature before the onset of menstruation is normally slightly less than the rectal (the one measured by the rectal method). This temperature can vary completely, but its value ranges from 36.7 degrees to 37.6 degrees. Before the onset of menstruation, you can notice how it becomes a little lower. This happens yes a couple of days before the start of the discharge
• During discharge, a temperature of 37 degrees is considered optimal. This is considered the most acceptable indicator and indicates the normal course of the cycle. But it is not always necessary to focus only on a value measured only once. Here you need to keep a detailed table of measurements every day and take into account strictly all phases, where it is easy to notice the difference in other phases
• If the temperature rises before critical days, this is normal, because this is the body's reaction to a natural process. It is very easy to understand why this is happening. During ovulation, an excessive amount of progesterone, the female main hormone, accumulates in the female body. It is this hormone that is able to influence the temperature center. which is located in the brain
• Commands come from the center of the brain that the temperature should be raised. This happens about a week before the onset of the menses themselves and only a couple of days (about two) before the onset of blood discharge - the temperature drops significantly. During menstruation, the temperature returns to normal

Charts of basal temperature before menstruation

First of all, before you start measuring basal temperature, you should understand how to do it correctly:

• the thermometer should be at an accessible distance so that you can get it without getting out of bed
• you can measure the temperature with an electronic thermometer (it will be easier and more accurate) or mercury
• the tip of the thermometer should be lubricated with baby cream, after which the thermometer is inserted into the anus no deeper than two or three centimeters
• the electronic thermometer itself gives you a signal that the value is determined, the mercury must be kept in itself for about five or even seven minutes
• you should not make any movements: walk, bend over, squat - this provokes blood flow and the results may not be correct

Based on this table, you can clearly see how the temperature changes during the cycle. During menstruation, the basal temperature stabilizes to an acceptable state of 36.6 or 36.7. After that, there comes a decline, which every day is able to fluctuate within one degree.

Before the onset of ovulation, the basal temperature gains its minimum value and is kept there for two to three days. After that, the egg provokes a sharp release of progesterone and the temperature rises significantly, rising to 37, 37.1, 37.2 degrees. This temperature is maintained from ten to fourteen days, and only then goes down again before the onset of a new cycle.

Graphs of basal temperature during pregnancy

• Ovulation is maintained for two to three days and the minimum temperature is maintained all this time. After the egg is released, it triggers the release of the hormone progesterone into the body. It is the saturation of progesterone that keeps and raises the temperature.
• The following days after the release of the egg are the most favorable for fertilization. You can see how the temperature level gradually rises. However, on the day when the temperature dropped sharply and the next day it rose sharply. most likely fertilization
• After this jump, you can notice a significant increase in temperature, which in some cases can reach up to 38 degrees. It all depends on the individual characteristics of the body and the health of the woman.
• 37.2 is the temperature that indicates the onset of pregnancy

Measurement of basal temperature will allow a woman to determine how well her body works, determine the exact onset of ovulation for a favorable conception, and correctly calculate the days on which you can have “unprotected” sex.

Of course, the most accurate measurement values ​​can only be obtained when the temperature is measured several cycles in a row.

It is normal for a woman's body temperature to fluctuate to a minimum. The female body is controlled by hormones and it is they who are responsible for the decline and growth of thermometer marks. Before menstruation, the temperature rising to the minimum values ​​\u200b\u200bis going down. this is unchanged and it only says that the discharge will begin soon.

In the normal state, it reaches 37, 37.1, 37.2 and even 37.5 degrees. It depends only on how the female body works. Be careful, the temperature increase from 36 degrees to 37 and above should be achieved only when the second half of the cycle occurs.

What does the basal temperature of 38 mean before menstruation?

It is possible that before the onset of critical days, you can observe an increased basal temperature. This may symbolize the presence of any disorders or diseases in the body.

First, check yourself for any inflammatory diseases in the body. They provoke an increase in body temperature in general. If the temperature was observed for only one day. most likely it was ovulation.

The basal temperature, which is kept at levels from 37.1 to 37.5 before the expected discharge and does not subside, indicates the onset of pregnancy. Please note that a high temperature of 38 degrees, which is kept for more than one day, indicates the presence of disease and inflammation.

Before measuring temperature, pay attention to the following factors:

• sex that took place at least six hours before the temperature was taken
• not a calm state, getting out of bed and moving
• alcoholic drinks drunk the day before
• taking medication
• small and very short sleep

All these factors cause incorrect and incorrect temperature measurements. Movement and sex increase blood circulation in the pelvic organs and provoke an increase in temperature.

If you notice a temperature of 36.9 in the first and second cycle, this most likely indicates that the egg simply did not mature this month. You should not panic here, since ovulation may not occur for several months a year. However, if you trace such a frequency for a long time, you should consult a doctor.

Video: " Basal temperature during pregnancy, before menstruation, during ovulation, measure basal temperature "

You can read in detail about what basal temperature is in the introductory article on the site. Today's article will be about what should be the basal temperature before menstruation, during menstruation, after menstruation.

It should be noted that we can get accurate information about how the female reproductive system works based on a basal temperature graph built over several monthly cycles. Only in this case, the doctor will be able to correctly read the graph, and see the full picture of the processes occurring in the female body.

Features of BT in the menstrual cycle

Many have heard about the so-called natural, or calendar, method of preventing unwanted pregnancy on "safe" days - the time before and after menstruation. These days are calculated according to the basal temperature chart. In order to determine "safe days", you need to understand how the female body behaves in the days preceding and after menstruation.

The basal temperature shows when there will be menstruation, whether ovulation has occurred, whether there is an inflammatory process in the body.

The correct measurement of basal temperature, in compliance with all requirements (without getting out of bed after sleep, at the same time, in the same way), allows you to build an accurate schedule and let you know about failures in the body, if any, or determine the exact phase of the menstrual cycle.

The basal temperature after menstruation lasts for several days in the range of 36.6-36.9 degrees. Then it gradually decreases, and ovulation gives a sharp jump in temperature.

The average menstrual cycle lasts about 28 days, ideally the temperature schedule will be as follows:

• The day before the end of menstruation, the temperature drops to about 36.3 degrees,
• Before ovulation, the temperature increases to 37,
• Ovulation occurs when the temperature increases to 37 and slightly higher,
• Before the arrival of menstruation, the temperature tends to decrease, and if fertilization has taken place, then the temperature above 37 will last most of the pregnancy.

Pregnancy and BT

Pathological BT

BBT readings before menstruation stopped at 37.4 - this is most likely a lack of estrogen, you need to visit a gynecologist.

BT during menstruation has readings of 36.5-36.9 and remains at the same level after the end of menstruation for several more days, and then it declines.

Violations in the BT schedule can occur due to such external factors:

1. Drinking alcohol shortly before bedtime
2. The duration of sleep was less than usual,
3. Sexual intercourse 6 hours before the measurement,
4. Taking hormonal drugs or contraceptives, as well as antibiotics or sedatives.

One of the most important indicators of the health of the female reproductive system is the menstrual cycle. Based on the regularity and duration of each phase of the cycle, a woman can draw a conclusion about the state of her reproductive system. Along with the cyclicity and duration of menstruation, the processes occurring in the reproductive system are indicated by basal temperature. What is hidden under this concept? What should be the basal temperature before menstruation?

Basal temperature - what is it?

Under the influence of physiological processes, the temperature inside the human body is constantly changing. Hormones have a special effect on the female reproductive system, which have different concentrations on different days of the menstrual cycle. It is they who affect the internal temperature indicators, when the woman is healthy.

However, when fixing the temperature in the armpit, minor changes will not be noticeable. To catch the slightest fluctuations in indicators allows the measurement of basal temperature. BT is the lowest daily indicator of body temperature, which is recorded at the moment a person wakes up after a full sleep.

The basal temperature differs from the usual one in that it is measured only on the mucous membranes. It is measured in three ways:

• in the mouth;
• in the vagina;
• in the rectum.

Of these methods, rectal is recognized as the most reliable. BT is widely used in gynecological practice as a method of diagnosis and control. However, in order for the measurement of basal body temperature to be informative, it is necessary to take measurements and record indicators every day for several cycles.

What can basal body temperature mean?

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Based on daily data, a woman can trace an individual graph of temperature fluctuations in different phases of the monthly cycle. Fixing the basal temperature allows you to identify:

• Beginning and end of the menstrual period. Each phase corresponds to certain temperature indicators. Based on the data, the duration of each of them is tracked.
• Favorable days for conception. During the cycle, there is only one day when the egg is ready for fertilization. BT allows you to identify this period.
• The development of the inflammatory process in the reproductive system. The body of each woman is individual. However, there are general normative temperature indicators. If the temperature deviates significantly from the norm, this indicates the development of the disease. Pathology is also detected in the case when the current temperature graph differs from the previous ones.
• The onset of pregnancy. The internal temperature after fertilization remains stable throughout the entire period of bearing the baby. The stability of the indicators after ovulation indicates fertilization.
• Hormonal disorders. Deviations from the norm also indicate failures in the hormonal system. Each phase of the menstrual cycle is affected by a particular hormone. BBT changes depending on its concentration. If the hormone is not enough or in excess, the temperature will deviate from the norm.

Basal temperature graphs allow gynecologists to confirm infertility, pregnancy, diagnose threatened miscarriage and hormonal deficiency. Separately, this diagnostic method is not used, however, in combination with other methods, it allows you to get a reliable result. Data for 3 months or more are considered informative.

How is BT measured?

The peculiarity of basal temperature is that many factors influence its indicators. Significantly distort the data:

• diseases accompanied by fever (colds, viral and bacterial infections);
• alcoholic drinks drunk the day before;
• short sleep;
• abrupt movements;
• eating, drinking;
• change in measurement time;
• overheating or hypothermia of the body;
• endocrine pathologies;
• medications.

To obtain a reliable result, it is necessary to measure the temperature in the rectum. Use a mercury or electronic thermometer. However, it should be borne in mind that an electronic instrument shows the result after about 1 minute, and a mercury one after 5-7 minutes. Basic rules for measuring BBT:

• The temperature is measured in the morning immediately after waking up. The night before, you need to put the measuring device in a place where you can get it without getting out of bed. Measurements are recommended from 6 to 7 in the morning.
• For measurements, you must always use the same measuring device. If for some reason this is not possible, you should purchase a similar one.
• The thermometer should be inserted approximately 2 cm into the rectum. You can't get out of bed. The thermometer is inserted in the supine position or on the stomach.
• Sleep on the eve of measurements should be at least 5 hours. The most reliable information is revealed during night sleep for more than 6 hours.
• You cannot change the measurement time. Fluctuations within 1-2 hours are allowed.
• When drawing up a BT schedule, you can not take hormonal drugs. Medicines affect the natural level of hormones, so the information is not indicative.
• If on the eve of the measurement there were factors affecting the results, it is necessary to note this in the graph.

What should be the BT on the eve of menstruation?

The basal temperature fluctuates around 36.6-37.5 degrees. Since the values ​​are in a small range, a change of 2-3 divisions is of great importance. There is no exact figure that the temperature in one or another phase should correspond to, since this indicator is individual.

However, there are norms of change that need to be guided. To determine personal indicators that indicate a particular phase of the cycle, the following must be considered:

• on the first day of the cycle (the beginning of menstruation), the indicator reaches 36.7–37 degrees;
• then the temperature decreases, on the last day of menstruation it approaches 36.2–36.6;
• during the maturation of the egg, the temperature indicator is 36.6–36.9;
• on the eve of ovulation, the thermometer shows a decrease of 0.2 degrees;
• on the day the egg is released from the follicle, the thermometer rises sharply and shows from 37 to 37.5 degrees;
• further indicators may fall by 0.1-0.2 degrees, but will stay above 37;
• if fertilization has not occurred, before menstruation the temperature will drop by 0.2–0.4 degrees.

Thus, the indicators of basal temperature before menstruation depend on the time left before the start of the menstrual cycle.

A week before the monthly discharge, the temperature will be in the range of 37–37.4 degrees. In 2-3 days, the indicator should drop by several divisions - to 36.7-37.1 degrees. However, when pregnancy occurs, BT will exceed 37.2.

What does an increase in BT mean on different days of the cycle?

An increase in basal temperature on different days of the cycle occurs for natural reasons and as a result of pathological processes in the body. The growth of BT in the middle of the cycle is due to the influence of estrogens, which contribute to the release of the egg from the follicle. Further maintenance of high rates is provided by progesterone, which prepares the body for pregnancy.

If the temperature remains consistently high after ovulation, fertilization has occurred. In this case, there will be no further decrease in BBT, menstruation will not begin. However, high temperature during menstruation, increased rates before them or during the maturation of the follicle indicate the development of pathology of the genitourinary system.

Possible deviations and diseases are described in the table.

Deviation	Disease	Associated symptoms
BT after menstruation (at the stage of egg maturation) above 37 degrees	Inflammation of the appendages	pain in the lower abdomen; difficulty urinating; increase in body temperature
	lack of estrogen	irregular menstruation; increased fatigue; unstable emotional state
	Inflammatory process in the ovaries (oophoritis, adnexitis)	pain in the pubic region and lower back; uncharacteristic discharge; discomfort during sexual intercourse; subfebrile body temperature
During menstruation, the temperature reaches 37-38 degrees	endometritis	copious discharge during menstruation; pain in the lower abdomen; purulent discharge from the vagina; irregular menstrual cycle
Before monthly indicators decrease, but during them they increase to the level of the last phase	endometriosis	painful periods; discomfort during intercourse; heavy and prolonged menstruation

However, in addition to an uncharacteristic increase in temperature, it is necessary to pay attention to the low level of indicators during the last phase of the menstrual cycle. If there is no change in BBT, there may be a violation of the production of progesterone. Sharp jumps and drops in temperature indicators throughout the entire menstrual cycle also indicate hormonal imbalance.

Drawing up and analyzing a graph of basal temperature has been practiced by gynecologists for a long time. Their study makes it possible to learn a lot about the female body: to identify the moment of ovulation or some gynecological diseases, to learn about pregnancy. The indicators of this particular temperature are of particular importance for determining the date of ovulation and for detecting pregnancy (indicators are evaluated in the second phase of the monthly cycle, before menstruation) - a peculiar temperature graph before menstruation may indicate ovulation and pregnancy.

Methods and reasons for measuring basal temperature

Basal temperature is measured with a clean thermometer in the mouth (5 minutes), in the vagina or in the rectum (3 minutes).

The data is entered into a graph in which the vertical column displays the value on the thermometer, and the horizontal column displays the day of the cycle.

In order to draw up an accurate schedule, it is necessary to strictly follow some rules:

• measurements start from the first day of the cycle;
• temperature is measured in only one way;
• measurements are taken in the morning, at rest (not getting out of bed), only at the same time;
• for measurement, it is necessary to use a thermometer of the same design (for example, mercury should not be replaced by a digital one);
• measurement is performed every day.

Some external and internal factors can make the schedule uninformative: moving, taking medications and alcoholic beverages, diseases. It makes absolutely no sense to plot a basal body temperature while taking hormonal contraceptives.

Why measure and monitor basal body temperature?

• with hormonal disorders;
• with suspicion of infertility;
• to determine the days favorable for conception;
• as a method of protection from unwanted pregnancy;
• to detect inflammatory gynecological diseases;
• to determine the likelihood of menstruation.

How does basal body temperature change?

In the absence of deviations in the basal temperature curve, three stages are clearly distinguished.

1. In the first (follicular) phase, the graph indicators are, as a rule, 36.4-36.7 ° C. This phase lasts until the moment of ovulation;
2. In the phase of ovulation, the temperature decreases slightly, and then abruptly rises by about half a degree. Such values ​​\u200b\u200bhold on throughout the luteal phase (about 13-16 days);
3. And already before menstruation, the basal temperature decreases slightly (during menstruation, its values ​​\u200b\u200bdo not exceed 37 ° C).

So, what should be the basal temperature before menstruation?

Based on the above values, it will be 37.2-37.4 ° C. Experts pay attention not to the digital temperature readings before menstruation, but to the difference between the temperature readings in the luteal and follicular phases. In the absence of pathologies, this difference is 0.4 °C.

Deviations from this figure may indicate:

• inflammatory processes;
• lack of progesterone;
• pregnancy (fever before menstruation and its delay).

Various situations

The basal temperature before menstruation is 36.9 ° C and there are no jumps in the entire schedule of the second half of the cycle? This situation may indicate that the egg in this cycle was immature. Such a cycle is called an anvulatory cycle, but this has nothing to do with the diagnosis of "infertility". Anvulatory cycles occur in absolutely healthy women up to 3 times a year.

If the basal temperature increased before menstruation and its values ​​​​are 37.0-37.2 ° C, then this situation may indicate the onset of pregnancy. It is likely that there will be no periods in the next 9 months. Smearing meager discharge during the period of the proposed menstruation should alert the woman, because they can talk about the threat of miscarriage.

An increase in basal temperature before menstruation to 37.4 ° C is usually associated with a lack of estrogen. In such a situation, a woman is unlikely to become pregnant and she should not postpone a visit to a gynecologist.

Any disturbances in the basal temperature schedule, especially if they are observed for several months, should alert the woman. Timely consultation with a specialist in such situations can prevent many diseases and increase the chances of successful treatment and recovery.

Many women want to know about the state of their health and determine the periods favorable for conceiving a child. Today, in addition to ovulation tests and maintaining a monthly calendar, there is another method - drawing up a schedule before menstruation. Knowing what the temperature should be, you can determine the onset of menstruation or pregnancy, as well as the days of safe sex or favorable for conception.

Basal temperature (abbreviated as BT) is a low temperature that a person experiences after waking up. From it you can determine all the necessary data. The basal temperature depends on how much hormones are released by the body into the blood. That is why many may note that the chart is constantly fluctuating - then it falls, then it rises.

If you do everything right and follow the graph of your basal temperature, then it is possible to learn a lot about your own body: about its health, condition, preparations ..

The basal temperature quickly changes its indicators as soon as a woman gets out of bed and begins to get ready for work, do household chores, etc. It makes no sense to take her measurements already in the daytime. Therefore, you should follow clear rules for measuring BT, which will help in scheduling:

• Use one thermometer at all times and apply it only one way: rectally (in the rectum), orally (in the mouth), or vaginally (in the vagina). Everywhere will be different.
• Measure BBT daily at the same time with a maximum difference of 30 minutes.
• Before measurements, you should sleep well, the duration of which should be at least 4-5 hours continuously, and preferably 6-8 hours.
• In the evening, you should prepare the thermometer for the procedure (shake it) and put it near the bed. In the morning it is not allowed to get up, strain the muscles. You just need to reach for the thermometer and measure BBT with it.
• Make notes about what influenced the changes in basal temperature. This may be a short sleep, sexual intercourse the day before, overeating, getting out of bed, drinking alcohol, stress, taking medications (especially contraceptives), another thermometer or measurement time, etc.

If you follow all the rules and take the necessary measures every day throughout the entire monthly cycle, you can display a BT schedule that will give a lot of information about your state of the reproductive system.

BT chart before period

Keep a low temperature schedule not only before menstruation, but throughout the entire cycle after menstruation and before it occurs. The BT schedule, which has accurate data, should be drawn up for at least 3-4 months, at best - from 6 months. This is the only way to find out exactly about all BT readings before menstruation in order to find out certain points:

1. Why does pregnancy not occur within a year?
2. Is it possible to detect infertility in a girl?
3. Are there hormonal imbalances?
4. Determination of the period when you can conceive a child of a certain gender.
5. Does the maturation of the egg occur and when does it occur?
6. Are there disruptions in the functionality of the endocrine system?
7. Is the required amount of hormones produced, which would indicate the correct functioning of the ovaries?
8. Is ovulation taking place?
9. Are there any reproductive problems? If there are, which ones?
10. What day will menses come?
11. Has there been a pregnancy?

The BBT chart undoubtedly gives all the useful information about a woman's health, especially if menstruation does not occur, pregnancy or ovulation does not occur. Also, experienced doctors can identify various deviations in the work of the reproductive system according to the schedule, which is why other deviations occur. Without additional diagnostic measures, a woman is not definitively diagnosed. Only after passing tests and obtaining various results after passing instrumental devices, it is possible to identify the exact cause of a particular pathology.

In order for all data to be accurate and correct for diagnosis, it is necessary not only to correctly determine the basal temperature, but also to build a graph. This is done according to the following rules:

• Specifies the day and month.
• The date of the beginning of the menstrual cycle is indicated.
• The basal temperature is noted exactly to all digits after the decimal point.
• Factors influencing changes in BT are indicated.

Since a woman primarily maintains a BT schedule for herself, she needs to be aware of all normal and deviant indicators. Only when they are identified, it is recommended to contact a gynecologist in order to consult in more detail, especially if there are deviations or suspicions of the presence of diseases that have not yet manifested themselves.

What should be the norm before menstruation?

It is necessary to draw up a BT schedule with the knowledge of what the norm should be before menstruation and in other periods of the menstrual cycle. In a healthy woman, the BT schedule constantly fluctuates (either rises or falls) before and after menstruation, before and after ovulation, during the period of conception, and.

• During the menstruation itself, the temperature should be up to 37 ° C.
• In the last days of menstruation, the "morning" temperature can drop significantly to 36.2-36.3 ° C.
• In the follicular phase (when the egg matures), the normal low temperature is 36.6-36.8°C.
• Before ovulation (per day), BBT normally drops by 0.1-0.2 degrees.
• At the time of ovulation itself, the temperature rises significantly more than 37 ° C.
• In the luteal phase (after ovulation), the temperature drops slightly to 36.8-37.5 degrees. However, at conception, it does not decrease significantly, but gradually increases for favorable implantation of the embryo.
• 1-2 days before menstruation, the low temperature drops to 36.7 ° C.
• Before the monthly BT rises to 36.9 ° C.
• The first day of menstruation is marked by a basal temperature of 37 degrees or more.

Indicators are normal when the basal temperature in the follicular (first) phase differs from measurements in the luteal (second) phase by 0.4-0.8 degrees. If these indicators are lower than indicated, then there are pathologies in the body.

Of course, it should be remembered that the body of each lady is individual. There may be slightly different indicators than those indicated. The most important thing should be the following:

1. In the follicular phase, the temperature should be lower than in the luteal.
2. Before the day of ovulation, the temperature should fall, and on the day of ovulation, it should rise.
3. The difference between the readings in both phases should differ by more than 0.4 degrees.

Such norms are indicators that everything is in order with the woman's body. There are no pathologies and diseases that would interfere with normal conception or the onset of menstruation. However, with various deviations, we can talk about the presence of pathologies that should be eliminated.

You should also familiarize yourself with the BT indicators that are noted during pregnancy. They are accompanied by the absence of the onset of menstruation and pain in both mammary glands.

Causes of deviations from the norm

Various deviations from the norm indicate that pregnancy has occurred or pathological processes occur in the woman's body, the treatment of which must be dealt with with the doctor. A pleasant reason for deviation from the norm will be the onset of pregnancy, which can be determined by a temperature of more than 37.2 ° C for 14-18 days before menstruation.

Even if there is spotting, you should take a pregnancy test to refute or confirm your guesses. Otherwise, we can talk about the presence of some kind of disease. This is also indicated by a basal temperature of more than 37 ° C before the onset of the menses themselves.

• If a high temperature (37.5 ° C) is noted for several cycles before menstruation, this may indicate inflammation in the ovaries or tubes. There are also cases of inflammation in other organs.
• If before the monthly BT drops significantly (below 36.9 ° C) and in the first days it rises abnormally (more than 37 ° C), then we can talk about the appearance of endometritis - inflammation of the uterus.

If the temperature rise occurred the day before menstruation, and then dropped, then you should not worry. Perhaps the measurement rules were violated. In any case, focusing only on 1-2 days should not be used in making diagnoses.

The causes of fever immediately before menstruation are:

1. A hormonal imbalance is when the body does not produce enough estrogen.
2. Influence of progesterone.

An increase in "morning" temperature in the follicular phase (after menstruation before ovulation) is also abnormal. If its indicators are more than 37 degrees, then you should contact a gynecologist.

Forecast

Experts draw the attention of readers to the fact that one should not focus on single indicators. Measurements may have been taken incorrectly. The thermometer could be faulty. In order to make some diagnoses and make predictions, you need to have several BBT charts on hand, drawn up for 3-6 months in a row. It's impossible to say anything from the chart alone.

The basal temperature does not indicate life expectancy. It helps only in identifying certain periods for conception, safe sex, as well as violations of the reproductive system, including the production of sex hormones.

Basal temperature measurements should be taken to know about the characteristics of your body, to be able to conceive a child, or in the early stages to identify diseases that may not show symptoms until they reach the peak of their development.