Ovulation calculator and conception time. How accurate is the ovulation calculator? Baby gender prediction

Menstrual cycle

There is a common misconception that a woman's menstrual cycle should last exactly 28 days, and ovulation should occur exactly "on the 14th day of the cycle" or "in the middle of the menstrual cycle." This is not true.

In fact, the menstrual cycle is divided into two phases - follicular (before ovulation) and luteal (after ovulation).

Follicular phase

The follicular phase (prior to ovulation) begins on the first day of the last menstruation and lasts until one dominant follicle (or several) matures in the ovaries. Ends with ovulation.

luteal phase

The luteal phase (corpus luteum phase) begins at the moment of ovulation and lasts about 12-16 days.

A corpus luteum forms at the site of the covulated follicle within a few days after ovulation. Its main function is the synthesis of progesterone and estrogens to support a future pregnancy. If pregnancy does not occur, then after 10-12 days the corpus luteum undergoes reverse development, which leads to a drop in hormone levels, after which the next menstruation begins. If pregnancy has occurred, the corpus luteum continues to function and support the pregnancy.

In the absence of pregnancy, the level of progesterone reaches its maximum value about a week after ovulation - at this time it is recommended to take a blood test for progesterone to assess the function of the corpus luteum.

Length of the menstrual cycle

The follicular phase can vary in duration (both in different women and in one woman throughout her life). Usually, the length of this phase of the cycle determines the length of the entire menstrual cycle and affects the delay in menstruation - for example, if the maturation of the follicle is faster or slower than usual, or does not occur at all. The luteal phase usually has a constant duration (12 to 16 days).

Gender of the child

The gender of the unborn child does not depend on the location of the stars in the sky, the menu of future parents or the position at conception. The sex of the child depends on which type of sperm fertilizes the egg - carrying the male Y chromosome or the female X chromosome. Spermatozoa of the "male" sex, as a rule, move easier and faster than "female" ones, but are more sensitive to external conditions and adverse effects. Spermatozoa of the "female" sex, on the contrary, are less mobile, but more hardy. Thus, if sexual intercourse occurs on the day of ovulation or later, the probability of having a boy increases, and if sexual intercourse occurs long before ovulation, then the probability of having a girl increases and the probability of conception decreases. However, experts believe that the reliability of this method does not exceed 60%.

Ovulation is called certain days when the female body is most predisposed to fertilization. That is why it is very important for everyone who dreams of a long-awaited pregnancy to know all the features of this natural process, as well as to be able to calculate the day of ovulation.

Ovulation and conception calendar online

Calculating ovulation online is one of the fastest, most accurate and effective ways to determine fertile (favorable for conception) days on your own. For this, a conception calculator is used, which calculates and displays the days of fertility in a period of four months.

To conduct an online calculation of ovulation, you must enter the following data:

• First day menstrual bleeding of the cycle you are interested in (if you are interested in the days of ovulation in this and the next three months, then you must enter the first day of the last menstruation; if you want to know on which days of the previous cycles you ovulated, you must enter the first day of the menstruation of the corresponding cycle);
• The average duration of menstruation;
• The duration of the regular cycle. If the cycle irregular, you must first analyze the duration of the cycle for the last 6 months, and determine the minimum and maximum number of cycle days. We put a tick "irregular cycle", in the left window we enter the minimum number of days of the cycle, in the right window that appears - the maximum;
• The duration of the corpus luteum phase, which is usually determined by the laboratory method by the level of the hormone progesterone, averages 12-16 days (the program defaults to 14 days).

After that, you just need to click the "Calculate" button, after which the program will issue an accurate calendar, which will indicate the days of the expected ovulation (with a percentage probability), as well as the days of safe and conditionally safe sex. Ovulation online with the help of such a calculator is calculated with a fairly high accuracy.

How does ovulation occur?

Normally, the female menstrual cycle, which is counted from the first day of bleeding to the first day of the next menstruation, lasts from 28 to 35 days.

On average, favorable days for conception (also called fertile) fall in the middle of the cycle, and include 1-2 days before ovulation, the ovulation period itself and 1 day after ovulation. The average duration of the state of fertility is 7 days.

That is, the fertile period begins at the moment of a jump in LH levels. If during this time the sperm does not fertilize the egg, it simply dies, and the new one matures only in the next cycle.

Corpus luteum phase (luteal phase)

After the end of ovulation (follicular phase), the maturation period begins corpus luteum - luteal phase, which is characterized by a decrease in the level of the hormone LH and an increase in the production of progesterone. The corpus luteum is responsible for the production of hormones necessary to maintain the normal course of pregnancy. If pregnancy does not occur, then the corpus luteum dies off, the level of progesterone decreases, which provokes the onset of menstruation.

The normal duration of the luteal phase ranges from 12-16 days.. The insufficiency of the corpus luteum phase (duration of 10 days or less) or its duration of more than 16 days indicates hormonal disorders, the consequence of which may be miscarriage of the fetus in the early stages.

Recall that the phase of the corpus luteum begins the day after the end of ovulation and lasts until the onset of menstruation. That is, to calculate the duration of the corpus luteum phase, you need to know the duration of your menstrual cycle, the middle part of which falls on ovulation, and the days following it fall on the luteal phase.

In a healthy woman, ovulation occurs every month (and sometimes twice), but there are two or three months a year when the egg does not mature - such cycles are commonly called anovulatory, and they are also considered a variant of the norm.

Read more about the process of ovulation

Having determined favorable days for conception, it will be quite simple to calculate the optimal number of sexual intercourses during this period, and the chances of becoming pregnant will increase significantly. It should be noted that the ovulation schedule will also be useful for those who want to prevent unwanted pregnancy, because it is often used as a method of contraception.

How to calculate the ovulation calendar?

Physiological signs of ovulation

Gynecologists say that every woman can notice the signs of ovulation and calculate conception - for this you just need to carefully monitor your body.

• Discharge Features. Vaginal discharge is a constant occurrence in every woman, but in different phases of the menstrual cycle they have a different character. So, before ovulation, they become transparent and liquid, or viscous, and the consistency resembles the protein of a chicken egg. In addition, during this period, some women observe brownish or bloody discharge (the so-called daub). If ovulation has not occurred, the discharge is sticky, creamy, or absent at all.
• Discomfort in the lower abdomen. The release of the egg may be accompanied by discomfort in the area of ​​the ovary in which the dominant follicle matured. They can last from a few minutes to several days, and resemble "sipping" the abdomen before menstruation.
• Swelling and pain in the mammary glands. Under the influence of hormones, in many women, before the release of the egg, the breasts can become sensitive or hurt.
• Increased libido. Scientists have proven that it is on the eve of ovulation that women experience the greatest sexual desire - this is due to the natural instinct of reproduction (in this way the body tries to increase the chances of pregnancy).
• General changes in well-being. Such signs are individual for each woman - it can be an exacerbation of taste and smell sensations, an increase in efficiency, or, conversely, irritability and increased emotionality.

calendar method

First of all, it should be noted that each woman has an individual conception calendar, which can be calculated based on the characteristics of the body.

With a regular cycle, if menstruation goes literally "by the clock", the question of how to calculate ovulation usually does not pose a big problem, because this will require the simplest calculations. For example, if a woman's cycle lasts 28 days, you can simply divide this figure by two: 28/2 \u003d 14. That is, in this case, days starting from the 12th will be considered fertile.

However, this method cannot be called extremely accurate. Very often, for a number of reasons, the menstrual cycle can be shortened or lengthened, respectively, the timing of the release of the egg also shifts, and when it is completely ineffective. That is, it is best not to rely on your own calculations, but to use a more convenient online ovulation calculator or measure basal temperature.

Basal temperature

Measurement of basal body temperature (BT) is one of the most effective methods and is best suited for women with irregular cycles. To understand how to calculate the day of ovulation in this way, you should know some features of the female body.

During the menstrual cycle, the basal temperature changes several times - this happens under the influence of hormones. At the beginning of the cycle, it is quite low, and during ovulation it rises significantly, reaches 37-37.3 C, and stays at this level until the next menstruation. True, in order to accurately determine the days of conception, it is very important to follow a number of rules:

• You need to measure the temperature in the morning at the same time, after a full night's sleep (at least 6 hours), without getting out of bed.
• Use the same thermometer, preferably mercury.
• The thermometer is inserted into the anus, vagina or placed under the tongue, after which you need to lie down quietly for 5 minutes.
• To get accurate results, BBT should be measured for at least two cycles, recording the results.

It should be noted that in this way you can calculate ovulation online. There are special resources and programs on the Web that automatically calculate fertile days (a woman only needs to enter BBT indicators there daily).

Read more about measuring basal temperature in the section.

Ovulation test

Ovulation tests are special strips that resemble those that allow you to determine pregnancy. True, the marker in this case is the hormone LH, and not hCG. Measurements are carried out in a similar way (immersion of the strips in the urine), and should begin 2-3 days before the expected ovulation.

The instructions for the test indicate which day of the cycle is best to start measuring, depending on the length of the cycle, but with irregular periods, it is almost impossible to determine this time.

Read about instrumental and instrumental methods for determining ovulation

Laboratory methods

One way to create an ovulation calendar, calculate fertile days and get pregnant quickly is to get tested for the main female hormones. These include:

• FSH - surrenders on the 3rd-5th day of the menstrual cycle;
• LG - for 3-8 or 21-23 days;
• Prolactin - for 3-5 or 19-21 days;
• Estradiol - on days 4-7 and 6-10;
• Progesterone - 6-8th day.

The concentration of these hormones varies depending on the phase of the cycle, therefore, according to the results of the tests, it is possible to determine the day for conception with great accuracy.

If you ask specialists how to determine ovulation most effectively as in any cycle, the answer will be unequivocal - control of follicle growth using ultrasound.

To do this, it is necessary to carry out several ultrasound procedures: the first - on the 7-8th day, the second - on the 10-12th, the third - at the request of the woman or the doctor's recommendation. A sign of ovulation is usually the size of the dominant follicle, which is 18-21 mm. In addition, you can later check whether the follicle has ruptured - if a corpus luteum has formed in its place, it means that ovulation was normal.

The vast majority of women are aware of such a concept as ovulation. But not everyone knows how to calculate the period of its occurrence. There are several ways to help find the cherished date in each new menstrual cycle. However, the easiest way to do this is using the ovulation calculator: it is better to calculate the most suitable days for conception with its help.

To get the result, you must enter the date of the first day of the last menstruation, the duration of the menstrual cycle and bleeding. You also need to specify how much time you need the calculation. As soon as the data is provided, you will be able to see a graph indicating the expected periods of menstruation and favorable days for conception.

Deciphering the result:

Days of menstruation

- Ovulation

Favorable days for conception

Hello dear blog readers. If some of you don't fully understand, why do it at all? I explain. The fact is that for fertilization, this process plays an almost dominant role. Knowing the date of maturation of the egg is necessary in order to effectively protect yourself from an unwanted pregnancy, or to get it, this pregnancy. However, “mere results” are often not enough. That is why we will analyze in detail why and when the egg leaves the ovary, how to calculate ovulation accurately using different methods.

Physiological aspects

Ovulation is the process of release of a mature egg from the ovary. This happens under the influence of neuroendocrine mechanisms of different levels. This term means that nerve impulses and hormones play a role in this. Without going into details, we will analyze what happens in the body.

The menstrual cycle is considered from the first day of the previous one to the beginning of the next menstruation. As soon as the bleeding ends, another follicle begins to mature in the ovary, containing a germ cell - the follicular phase of the ovarian cycle starts. Gradually, with the development of the egg, the level of sex hormones rises.

By the time of the final maturation of the follicular formation in the female body, there is a peak level of estradiol (the most active subspecies of estrogen). When this value is reached, the walls of the follicle begin to collapse - the ovulatory process starts, starting the luteal phase. As soon as the germ cell was “free”, it goes to the fallopian tube, where it is able to live for a day, waiting for its sperm.

In place of the torn "receptacle" of the germ cell, the corpus luteum matures - this, relatively speaking, is the "yolk" that will nourish the fetus until the placenta is formed. If conception does not take place, then the egg dies, and the corpus luteum regresses as unnecessary. Throughout the entire period of its “life”, it produced the hormone progesterone, which is designed to help the fertilized egg to implant (introduce) into the wall of the uterus. It softens the endometrium (the inner lining of the uterus), makes it loose, improves blood circulation. But with the regression of the corpus luteum, this hormone becomes less and less. And the loosened epithelium can no longer become “taut” again. Therefore, as soon as the level of progesterone drops critically, and the level of estrogen rises, another menstrual bleeding begins - rejection of the uterine epithelium.

So, ovulation is the release of the egg from its "refuge". This “action” occurs approximately in the middle of the cycle (for example, with the duration of the last 28 days - on the 14th day). The exit of the germ cell from the follicle can take place on the 13th and 15th day, this is considered the norm. But the fact is that the same corpus luteum always lives only 14 days (rarely ± 48 hours), regardless of the duration of the cycle. This means that if it lasts 35 days, then ovulation will take place on the 21st day, and if 22, then on the 8th. The ovulation calculator can calculate the optimal date for conception based on these data.

But what to do with an irregular cycle? When once - five weeks between bleedings, and another time - three weeks? In addition, there are such concepts as early and late menstruation, which are deviations from the norm, but are common. How to understand that a favorable time for starting a pregnancy begins?

Calculation of the ovulatory date

There are many methods to help find out exactly when the germ cell will mature and come out. Among them:

• online ovulation calculator (calculating a suitable date for conception is the easiest and fastest), essentially repeats the calendar method;
• temperature method;
• cervical method;
• symptothermal way;
• by ultrasound.

Test methods:

• test strips;
• jet tests;
• using a microscope;
• fern method.

It should be noted that in order to achieve the reliability of any of the listed methods, it is necessary to carry out measurements for at least 5-6 cycles. You can compare what data the calculator provides and how the body actually behaves.

calendar method

In principle, it has already been described in the previous section. It can be used only in those women who can boast of menstruation "just on schedule."

Observation must be carried out for 6 "laps". It is necessary to keep a menstrual calendar, clearly marking the dates of the beginning and end of bleeding. For analysis you need:

1. Find the longest cycle. From its duration in days, you need to subtract 12. Why this number? As already mentioned, the corpus luteum lives only 14 days. For the reliability of calculations and taking into account possible physiological variations, it is worth slightly “expanding” the possible period of its occurrence. This will be the last day in this cycle when conception can take place.
2. Find the shortest cycle. Subtract from his number 19-20. The calculation is as follows: for example, the duration of the cycle is 26. Of these, 14-15 are the luteal phase. So, ovulation was on the 11th day. However, spermatozoa can live in the vagina for 2-3 days. Thus, starting from 8-9 days and ending with 12 - days favorable for conception.

Measurement of basal temperature

Basal temperature is the “heating” of the internal organs in a calm state.
Temperature must be measured:

• in the rectum (permissible - in the vagina and in the mouth);
• at least 5-7 minutes;
• daily (including during menstrual bleeding);
• at the same time;
• immediately after sleep, which lasted at least 3-5 hours;
• with the same thermometer.

In the follicular phase of the menstrual cycle, the temperature does not exceed 36.4-36.8°C. However, 12-24 hours before the separation of the egg from the follicle, it rises, and sometimes by almost a degree! This happens to stimulate the rupture of the follicular formation. And in the entire postovulatory period until the first day of the next bleeding, it remains at the level of 37.1-37.5°C. Fertile is the period from the beginning of the cycle to the third day after the temperature jump.

This technique is used mostly for contraception than for pregnancy planning. After all, ovulation is often "seen" after the fact, when it occurred. And after the third day of the rise in temperature, pregnancy is impossible until the next cycle.

However, it is best to combine the method of measuring basal temperature and the ovulation calculator - you can calculate the days for conception more accurately.

Cervical method

The vagina and cervix are very slimy organs. The possibility of pregnancy, local immunity, and the condition of the mucosa depend on the presence of this natural secret. The state of cervical mucus is very dependent on the level of hormones in the body. The more estrogen, the more fluid the secret. Immediately after menstruation, it is almost absent, which is unfavorable for spermatozoa. Then it appears, but thick, viscous, like glue. It is inconvenient for male reproductive cells to move along it, they are in it like in a swamp. Gradually, it becomes more liquid, and by the ovulatory moment it is watery, slippery, reminiscent of egg white. Here they swim straight into the uterus.

Symptothermal method

The most reliable of the above is ... a combination of these methods. If you calculate the timing of the release of the egg on the calendar, monitor the temperature and condition of the mucus for several months, you can learn to determine ovulation almost accurately. Thus, in order to achieve conception, you need to carefully monitor your body.

Ultrasound diagnostics

Ultrasound is one of the key research methods in gynecology. With it, you can track the process of maturation of the follicle from the very beginning to the release of the egg from it. This is done by a doctor of functional diagnostics, who registers the size of all follicular formations in the ovaries. As the moment of release of the egg approaches, one of them should increase in order to soon burst and turn into a corpus luteum.

If the doctor sees that none of the follicles is growing, then he is forced to state an anovulatory, “idle” cycle. It is possible to diagnose:

• hormonal deficiency (the formation has already developed, but the cell does not come out of it);
• premature hormonal effects (corpus luteum begins to form even before ovulation);
• cyst formation (postovulatory follicle growth);
• and etc.

It is worth noting that the calculator is not able to provide for anovulatory cycles and failures. Therefore, if there are any deviations or suspicions of them, it is necessary to be examined using ultrasound.

Test Methods

Similar to tests to determine the level of hCG (pregnancy test), there are test strips for registering luteinizing hormone, which is responsible for ovulation. There are inkjet tests, as well as such strips that must be dipped into the urine. They can show one strip (ovulation is "far away"), "one and a half", in the sense - one fuzzy (usually 2 days before and 2 days after the release of the germ cell) and two - "we are here."

To use such strips, the use of the calendar method is mandatory. You must first calculate the average cycle time, find the approximate date of the ovulatory process, count 3 days from it and start testing.

As already mentioned, at the ovulatory moment in the body is the largest amount of estrogen for the entire cycle. To find out what the content of this hormone is, they use the “fern method”. It is necessary to apply saliva to the glass. On days when the hormone content is low, when it dries, salt from the liquid is deposited in the form of randomly located dots. But with a high level of estrogen (2-3 days before ovulation and 2-3 after), these points are systematized and resemble a fern leaf.

Today, glass has been replaced by mini microscopes the size of lipstick tubes. It has an area for applying biological fluid, as well as an eyepiece in which the result is visible. The principle of operation is similar to the "fern". Interpretation is carried out using control drawings from the instructions.

Thus, you can use anything: ultrasound, test strips, ovulation calculator - it is not a problem to calculate suitable days for conception. It is useless to argue about which of the listed methods is more accurate: of course, ultrasonic. However, it is less accessible and requires regular and frequent visits to the hospital. The test method is only slightly inferior to it. However, it is best to use a combination of several methods. But what if the cycle "jumps"?

irregular cycle

How to calculate ovulation with an irregular cycle? It is optimal to use a test method - a mini-microscope. The costs will be minimal (one such device costs about 300-400 rubles), the “equipment” will serve for a long time, and show ovulation for sure. And if you conduct research every day, then it is impossible to miss it.

You can also use the cervical method. Cervical mucus is one of the clear indicators of approaching ovulation, and it begins to change a few days before it.

But the temperature and calendar method will not help much, including a calculator, because even if you watch your menstruation for a year, the calendar calculation of the ovulation period will be purely approximate.

Conclusion

Thus, with a regular cycle - the ovulation calculator will be able to calculate the best time for conception "on time"! To be sure of the correctness of the calculation, you can repeat it yourself, as well as use other methods. However, if there are any problems with the cycle, suspicion of recurring anovulatory periods, be sure to consult a doctor. I hope that this article was useful to you, and I say goodbye to you until the next useful material. In order not to miss the weekly newsletter, subscribe in the right panel of the blog.

Perhaps all this may be hard enough to believe, but doctors say that this is a fact. Namely, they say that in the whole month there is only one single day on which a full-fledged absolutely healthy woman of reproductive age can successfully become pregnant. And in some exceptional cases, such a day may occur twice directly during one single menstrual cycle. However, in the vast majority of all available cases, this very “X-hour” favorable for a full-fledged conception lasts only one day, and these same days are called, as you probably already guessed, ovulation.

Directly on the day of the onset of full-fledged ovulation, which we will actually teach you to calculate correctly now, there is a planned release of an already fully mature egg directly from its house or follicle, which at the same time breaks. And within a day, this most mature and released egg from the follicle will be waiting for its fertilization, and, unfortunately, if it turns out to be simply unclaimed, it will subsequently die, as Mother Nature intended this process. The horror, however, is only 24 hours in a whole month, and even then all this is in the most favorable best case. Sometimes it also happens that full-fledged ovulation does not occur at all. It should be noted that with a completely regular menstrual cycle and with the absolute health of the woman herself, on average, young women who never experience any gynecological or reproductive problems have only ten such ovulations a year, we can say that this does not happen at all monthly .

We will immediately try to warn those young, and not quite experienced girls who immediately decided to calculate their day of full ovulation for the sole purpose of protection, not everything is so simple. Remember, pregnancy will be very likely and quite possible if just a few days before the onset of full ovulation you had poorly protected or even unprotected sexual intercourse. This can happen precisely because male sperm, unlike the female egg, are always more tenacious, and they can retain their ability to fully fertilize even for several days, or rather up to one week.

In the same case, if you are trying to calculate exactly the opposite, then, of course, you should definitely know how to correctly calculate the day of your full ovulation.

How to correctly calculate your own ovulation?

To date, there is a fairly simple, but quite effective formula that allows you to correctly calculate the day of the onset of full ovulation. Moreover, it is quite possible to do this even at home and without any additional devices. Although, by the way, there are already ready-made specially created calculators for calculating the onset of full-fledged ovulation online, which, of course, really simplify this task, but in fact, there is absolutely nothing complicated or unavailable in such manual calculations.

So, scientists have long established that the onset of full ovulation in any woman of reproductive age with almost any duration of her menstrual cycle should occur exactly fourteen days before the first day of the start of her next period. It should be noted that the duration of the very first phase of the menstrual cycle may well change somewhat, but the period after the onset of full ovulation is a completely constant value. And if, for example, your menstruation specifically comes on quite regularly, as they say “number to number”, then, of course, calculating your day of full ovulation will turn out to be, well, just a piece of cake.

Namely:

Your day of full ovulation will be equal to the date of the next period, from which you will need to subtract exactly fourteen days.

We give you a completely classic example: for example, with a regular and even a 28-day menstrual cycle of a woman accepted as the norm, the onset of full-fledged ovulation usually occurs exactly on the fourteenth day of such a cycle. And if, for example, this month your menstruation began on the third day, then in fact, with the same full-fledged 28-day menstrual cycle, you will need to wait for the onset of full-fledged ovulation on exactly the seventeenth day, namely exactly fourteen days before the start of your next menstruation. In the event that your particular cycle is somewhat longer or shorter than the accepted norm, then directly to the first day of your last menstruation you will need to add the duration of your particular cycle (for example, 26 or 30 days). In this simple way, you will get your estimated date of the next menstruation, in fact, from which you will again need to subtract exactly fourteen days, and as a result of this you will get the exact date of the onset of full ovulation in this particular menstrual cycle.

And actually, it was on this principle that the so-called calendar method of female contraception was once built.

Such a calculation of the onset of full-fledged ovulation is truly quite simple, but still it has one but quite significant BUT. This method may be applicable only for those women who have a strictly regular menstrual cycle. And, of course, you should take into account the full schedule, well, at least for all the last four or even six menstrual cycles, and therefore for the same number of months.

If, on the contrary, you are carefully trying to get pregnant and it is for this simple purpose that you are looking for how to correctly calculate the day of the onset of full ovulation, then our next tip will be incredibly useful for you. Namely: with a not sufficiently regular menstrual cycle, say, lasting from twenty-six to thirty days, your chances of a full-fledged one increase significantly if you carry out your sexual intercourse regularly and every other day directly from the tenth to the eighteenth days of the menstrual cycle. After all, this is the very time of the alleged ovulation

Ovulation calculator can be wrong

As you understand, for couples who are actively planning their pregnancy, timing the onset of full-fledged ovulation is indeed extremely important and necessary. However, this method, unfortunately, cannot be considered too high-precision. And the thing is that ovulation itself is a very labile process. And, of course, under the influence of a number of extraneous external or internal factors, and even with a fairly regular menstrual cycle, the onset of full-fledged ovulation can drastically shift in one direction or another. And this, in particular, may well lead to frequent stress, severe overwork, and even frequent colds, as well as some hormonal disruptions. And even more, in extremely rare cases, but still, the onset of full-fledged ovulation can occur even twice in one monthly cycle, which women should especially remember if they want to protect themselves from unwanted pregnancy.

And, of course, it is not at all excluded that in a particular menstrual cycle, the onset of full-fledged ovulation will not occur at all. Actually, that is why modern experts strongly recommend using possible methods for it in the complex. And first of all, in such a complex it will be important to focus on your own feelings, as well as be sure to keep a schedule for measuring basal body temperatures, and, of course, use a special one. And the most correct and accurate will, of course, be a timely ultrasound examination, which will definitely be able to determine the time of onset of full ovulation as reliably as possible.