Can ovulation be at the end of the cycle. When does ovulation occur? How many days before menstruation does ovulation begin?

If the reproductive system works smoothly, a woman ovulates on average once a month. How often the maturation of the egg occurs depends on the characteristics of the menstrual cycle of a particular woman.

Does ovulation occur every month?

Normally, several cycles per year in a woman can pass without ovulation. With age, the number of anovulatory cycles increases, so after 30–35 years, the chances of a quick conception decrease. If a woman is about 40 years old, conception is possible, but to the question “how long does ovulation occur?” the likely answer would be: "In a few months." During menopause, ovulation in women stops altogether.

What day does ovulation occur?

The menstrual cycle lasts an average of 28-32 days. Without special studies, it is impossible to accurately answer the question of when a girl ovulates. Ovulation usually occurs in the middle of the menstrual cycle (day 12-15). For a more accurate calculation, it is necessary to plot the basal temperature over several months.

Another way to try to find out when ovulation occurs is with a calendar. To find out when ovulation occurs after menstruation, it is necessary to count 14 days from the beginning of the last menstruation on the calendar. With an ideal 28-day cycle, there will also be 14 days left until the next menstruation, that is, ovulation will occur exactly in the middle of the cycle. But does ovulation always occur on the 14th day?

Doctors say that the ideal classic version is not so common. Most women ovulate between days 11 and 21 of their cycle, counting from the first day of their last period. At the same time, from 12 to 16 days remain until the next menstruation. After what time ovulation occurs, it depends on the hormonal background, and the emotional and physical state of the woman, and in different cycles ovulation may occur on different days. Doctors are also aware of cases when a woman had two ovulations at once during one menstrual cycle.

How many days does ovulation occur?

Ovulation is a short phase of the menstrual cycle, lasting only 48 hours. During this period of time, the egg ready for fertilization leaves the ovary, descends through the fallopian tube and moves towards the uterus, where it will wait for fertilization. If fertilization occurs, the egg will attach itself to the wall of the uterus.

Favorable days for pregnancy are two to three days before ovulation and one day after, and on the day of ovulation, the chances of conception are especially high. Therefore, in order to calculate favorable days, it is very important to keep an ovulation calendar and imagine how long ovulation occurs.

A mature egg is viable for only 24 hours, so the so-called safe days come within a day after ovulation. The chance of conception after ovulation is extremely low.

How to know if ovulation is happening?

Many women think about how to find out when ovulation occurs - after all, the correct definition of this period will allow you to conceive a child faster. At home, without going to the doctor, it is convenient to use the following methods.

  • With regular periods, you can use the calendar method to calculate ovulation. According to him, ovulation should occur approximately in the middle of the cycle, but how to understand if ovulation occurred on the days you planned? Connect additional methods for determining ovulation!
  • To determine that ovulation has occurred, measurement of basal temperature will also help. An increase in temperature in the rectum indicates the release of an egg ready for fertilization. At what temperature ovulation occurs, you can find out by monthly charting your basal temperature. Usually, the basal temperature during ovulation differs from the pre-ovulatory values ​​by about half a degree.
  • An ovulation test is another way to determine if ovulation is occurring. Ovulation test strips are similar to pregnancy tests, only they show two strips not in case of successful fertilization, but when an egg is released from the ovary.

When does fertilization occur after ovulation?

After ovulation, the sperm has about a day to meet the egg and fertilize it.

If conception does not occur, the egg is destroyed in the fallopian tube within a day, and after about 14 days the woman begins menstruation again - this is the release of an unfertilized egg.

If the meeting of the sperm and egg was successful, the fertilized zygote descends into the uterus for 6-12 days, after which it is fixed there and pregnancy occurs. With the onset of pregnancy, the ovaries stop producing new eggs, so you can not be afraid that ovulation occurs during pregnancy - re-fertilization is impossible.

You probably know quite a lot about your menstrual cycle, such as the frequency and intensity of your periods. Here we take a closer look at the female menstrual cycle, ovulation and menstruation. Of course, no website can replace a full consultation with a healthcare professional, however, we will help you get a general idea of ​​​​how this happens.

Understanding your menstrual cycle

The duration of the female cycle is not the same. The most common cycle length is 23 to 35 days. The difference in the duration of the menstrual cycle, as a rule, concerns the period before ovulation (the so-called follicular or follicular phase). For most women, it takes 12 to 16 days from ovulation (when an egg is released from the ovary) to the onset of menstruation (called the luteal phase).

Phases of the menstrual cycle

Menstruation (monthly)

The first day of the menstrual cycle is the first day of menstruation (day 1). Menstruation then lasts 3 to 7 days. Surely, you know that in the presence of menstrual pain, you experience the most severe pain in the first few days of menstruation. This is because your hormones actively promote shedding of the uterine lining that has grown over the previous menstrual cycle.

Preparing for ovulation

At the beginning of your cycle, the pituitary gland, a gland located at the base of the brain, produces follicle-stimulating hormone (FSH). It is the main hormone that stimulates the ovaries to produce eggs. Follicles are fluid-filled sacs in the ovaries. Each follicle contains an immature egg. FSH promotes the maturation of a certain number of follicles and the production of the hormone estrogen. On the first day of menstruation, estrogen levels are at their lowest. Then it begins to rise along with the maturation of the follicles.

As the follicles develop, usually one of them becomes "dominant", and the egg matures in this large follicle. At the same time, the growing level of estrogen in the body is responsible for the saturation of the lining of the uterine cavity with nutrients and blood. This is to ensure that, in the event of pregnancy, the fertilized egg has all the nutrients and support it needs to grow. High levels of estrogen also contribute to the formation of mucus, a “sperm-friendly” environment (or, scientifically, cervical (cervical) mucus of the fertile phase). You may have noticed a thin, sticky discharge that may have a cloudy whitish tint. Spermatozoa move more easily through this mucus and survive for several days.

Your body produces hormones that control your menstrual cycle. At the beginning of the cycle, follicle stimulating hormone (FSH) is an important hormone. An increase in FSH contributes to the maturation of ovarian follicles (fluid-filled vesicles containing one immature egg each) and the beginning of the production of a second hormone, estrogen.

Understanding the ovulation cycle

Ovulation

The level of estrogen in the body rises steadily, and at some point it leads to a sharp increase in the level of luteinizing hormone (ovulatory LH surge). The surge of LH leads to the rupture of the dominant follicle and the release of a mature egg from it, which then enters the fallopian tube. This process is called ovulation.

Many women think that they ovulate on day 14, but 14 days is an average and most women tend to ovulate on a different day of their menstrual cycle. The day of ovulation differs from cycle to cycle. Some women claim to experience a painful spasm during ovulation, but most women feel nothing and ovulate without any symptoms.

The level of estrogen in the body is still rising and at some point it leads to a sharp increase in LH - an LH surge. This surge of LH triggers ovulation, the moment an egg is released from the ovary. Although many women think that ovulation occurs on day 14, the actual day of ovulation depends on the length of the cycle. Some women feel a cramp when they ovulate.

After ovulation

Once released, the egg travels down the fallopian tube towards the uterus. Its life cycle is up to 24 hours. The life cycle of a spermatozoon is more variable, however, and, as a rule, is from 3 to 5 days. Thus, the days immediately preceding ovulation and the day of ovulation itself are the most fertile - that's when you have the greatest chance of getting pregnant. Immediately after ovulation, the follicle begins to produce another hormone - progesterone.

Progesterone contributes to the subsequent preparation of the mucous membrane of the uterine cavity for the adoption of a fertilized egg. Meanwhile, the empty follicle in the ovary begins to shrink, but continues to produce progesterone and begins to produce estrogen. During this time, you may experience premenstrual tension syndrome (PMS), such as breast tenderness, bloating, drowsiness, depression, and irritability.

Once released, the egg travels through the fallopian tube to the uterus. The egg lives from 12 to 24 hours, but because the sperm lives for several days, the highest fertility and the highest chance of getting pregnant occurs when having unprotected sex on the day of ovulation and the day before. Immediately after ovulation, the destroyed follicle begins to produce another hormone called progesterone.

Preparing for the next period

When an empty follicle shrinks in the event of an unfertilized egg, estrogen and progesterone levels decrease. In the absence of a high level of hormones to maintain the necessary environment, the increased mass of the mucous membrane of the uterine cavity begins to exfoliate, and the body gets rid of it. This represents the start of menstruation and the start of the next cycle.

When the empty follicle shrinks, if a fertilized egg does not attach to the uterus, your progesterone level drops. The uterus no longer needs to maintain an environment to support the baby, so the body needs to reboot and prepare for the next cycle. Symptoms of premenstrual tension (PMN) will begin to subside. Without a high level of hormones to maintain the necessary environment, the formed lining of the uterus begins to break down, and the body begins to excrete it. This is the start of your period and the next cycle.

In the case of fertilization of the egg and its fixation in the uterus, the empty follicle is supported by an increased level of the pregnancy hormone (human chorionic gonadotropin). The production of estrogen and progesterone continues for a long time until the placenta becomes strong enough to support the developing embryo.

The fertilized egg attaches to the lining of the uterine cavity. As a rule, this occurs a week after fertilization.

After implantation of the egg, your body begins to produce the pregnancy hormone human chorionic gonadotropin (hCG), which will keep the empty follicle active. It will continue to produce estrogen and progesterone to prevent shedding of the uterine lining until the placenta has formed to support the pregnancy and contains all the nutrients the embryo needs.

2009-03-17 11:10:58

Natalia asks:

Hello. I have a menstrual cycle of 30-32 days. From the beginning of the last cycle, I began to measure BBT to determine ovulation. As I know, on the day of ovulation, BBT is slightly lower and the cervical fluid is more abundant, and then (the next day) the temperature rises to 37 and higher.
Menstruation was supposed to start on 03/13/09, a delay of 4 days. 03/16/09. BBT was 36.5, the cervical fluid was very abundant, and today (03/17/09) the temperature is 36.9. Yesterday I had sexual intercourse, put a pillow under the pelvis, raised my legs.
Question: was it ovulation, can there be ovulation at the end of the cycle or only in the middle? Is fertilization possible? THANK YOU!

Responsible Bystrov Leonid Alexandrovich:

Hello Natalia!
Ovulation at the end of menses. there is no cycle. It is impossible to tell if you have ovulated without seeing the basal temperature chart. Judging by what you wrote, the cycle was anovulatory (no ovulation). What I advise you - buy a urinary ovulation test in a pharmacy and use it - it's more reliable.

2016-10-11 11:28:05

Svetlana asks:

Good afternoon. We are planning a second child. I drank 7 months of jess +, canceled and started planning. But my chest hurt. The neurosurgeon prescribed celebrex 100 3 times a day for 3 weeks. And methocarbamol 500 2 times a day. I started treatment at the end of the cycle, making sure that I was not pregnant. The question is whether we can plan further if I finish the treatment by the next ovulation. Or you need to skip the cycle.

Responsible Palyga Igor Evgenievich:

Hello Svetlana! If you wish, you can plan conception whenever you want, the drugs will not have any negative effect on the conception and development of the fetus, do not worry.

2014-08-11 14:48:59

Tamil asks:

Hello, dear doctor. For a year now I can’t get pregnant. I already have a child of 10 years old. I gave birth by caesarean section. everything is in order. There is ovulation. day of the cycle. My husband is the same. There were no problems with the first pregnancy. Thank you in advance for the advice.

Responsible Bosyak Yulia Vasilievna:

Hello Tamila! In many cases, there is such a thing as secondary infertility. If ovulation stops, the tubes are passable, the uterine cavity is normal (the polyp was removed), then you should become pregnant within 6 months. open sex life. If this fails, then it is necessary to plan IVF.

2013-08-11 18:33:13

Alena89 asks:

Hello! I am 24 years old. Since the age of 17, hypothyroidism. In April last year, a frozen pregnancy, ttg about 1.5 when taking iodine 50/150. During the year, they take euthyrox 50 mcg, more than 3.5 did not rise. There was an episode of thyrotoxicosis after stimulation of ovulation. The pregnancy did not occur. I took tyrosol 5 mg 2 times a day for 1 month. TSH increased to 34!! Canceled tyrosol, a month later TSH 11.6. Started taking Euthyrox 50 for a month. Didn't take anything for a month. Has handed over ttg in June-3,09. Reception of euthyrox 50 mkg during the month - in July, TSH - 1.40. This was during the expected ovulation period. Since that time, nothing has been taken for 2 weeks. Now the end of the cycle is day 28 - a pregnancy test is positive. What dose of euthyrox should I start drinking?? Should I immediately increase the dose to 75 mcg ?? Thank you! P.s. Weight 64 kg, east 1.68.

Responsible Korchinskaya Ivanna Ivanovna:

Yes, the dose of euthyrox should be increased immediately after the onset of pregnancy, but I have no right to make virtual appointments, you should contact an endocrinologist who should observe you throughout your pregnancy.
Adequate compensation of hypothyroidism is responsible for maintaining the level of TSH in the range of 0.4-2.5. Further control of the adequacy of therapy is carried out by the level of TSH and T4, which are examined every 8-10 weeks.

2012-08-29 07:14:10

Anastasia asks:

Good afternoon! Please answer my question. Starting from this cycle, I canceled Marvelon, and last month, towards the end of the cycle, I drank additional Norkolut for 7 days due to daubing. Ovulation was normal, according to the test and ultrasound. Sex life is regular (every day). Menstruation came with a delay of 4 days, with an attack in the form of nausea, sweat, it got dark in the eyes, pulled the lower back, and gave it to the rectum. I drank nurofen, everything went away. But menstruation is very dark and profuse on the first day. At first I did not attach any importance, since once this also happened. Ok drank 4 months, and there were no problems. Maybe it's a withdrawal reaction, or an early miscarriage, or an ectopic? I don’t know if it’s worth running to the doctors every month now, or not paying attention and waiting for pregnancy? Pregnancy test negative. This month I was very nervous, and last month I had a minor operation. Maybe it's just stress?

Responsible Purpura Roksolana Yosipovna:

This is not an early miscarriage or an ectopic pregnancy, this is a hormonal imbalance that COCs corrected when you took them. If you have stopped taking COCs because planning a pregnancy, you need to wait for 3 cycles and then become pregnant. After giving birth, menstruation should return to normal. Stress could also affect the delay and abundance of discharge.

2012-06-16 02:02:59

Svetlana asks:

I am 18 years old. Height 165, weight 57. Problem: acne for several years, increased greasiness of hair, hair in the crotch is visible on the legs from under panties, mens. there are painful with the intake of Ketonal, there is chest tension, mens. 5 days, abundant days 3. The results of all female and male hormones on the days of the cycle, TSH, T4 free, insulin, C-peptide, copper, zinc, lipid spectrum are all within the NORM. By the way, everything is fine too. The doctor said about the good potential. Mens. from 11.5 years old, regularly, cycle 28 days, according to the test strip - ovulation for 15 days. Now the problem is the choice of the first COC. HELP ME PLEASE. And is it possible to start taking COCs in the middle or end of the cycle. My choice fell on Novinet or Jess. My doctor is trying to persuade me to postpone my adult life. THANK YOU.

Responsible Amro Irina Gennadievna:

Based on your complaints, it can be assumed that you have signs of hyperandrogenism (increased levels of male hormones). If you plan to start sexual relations, then you need to take this moment into account when choosing a COC. It is necessary to begin not with those preparations which you have listed. At the same time, it must be remembered that a properly selected COC only protects against pregnancy, and also, in your case, normalizes the condition of the skin. COCs do not protect against infection.

2012-03-22 05:37:14

Olga asks:

Hello! Please advise! I am 29 years old, I came to the doctor for an examination, passed all the tests, everything is normal. The doctor sent for an ultrasound scan, said that once every six months at least you need to be examined. At 21 d.c. I did an ultrasound, I was diagnosed with endometrial hyperplasia of 17 mm. no structural changes, everything is normal. At 13 d.c. I once again did an ultrasound of the endometrium 7 mm, but the doctor said that I did not ovulate. He told me to come at about 25-26 dc to check the endometrium again, because it increases at the end of the cycle. The result at 25d.c endometrium is 16 mm. The doctor told me that the norm is 15 mm. On the 26th day of the cycle, I passed an analysis for histology (aspiration paper biopsy) Conclusion-Endometrium of the early secretory phase of the cycle with focal simple hyperplasia of the glands. I was prescribed Duphaston from 16 to 25 days. The fact is that I still do not have ovulation during the last 3 months, according to the testimony of BT. The doctor said to drink Duf. and on 3-4d.c. come to the ultrasound control to see what condition the endometrium is in. And if everything is more or less, he will prescribe Clostilbegit for me from 5 to 9d.c. to restore ovulation. Tell me please! Clostilbegit in combination with Duphaston can be taken, and can I get pregnant with hyperplasia, or is it better to cure ondo at the beginning, and then take it to another. My husband and I are planning to have 2 children. 1 birth was 6.5 years ago, after stimulation with clostilbegit. Then they drank only 5 tab. and got pregnant. Thanks in advance for your reply!!!

Responsible Silina Natalya Konstantinovna:

Olga, if hyperplasia is histologically confirmed, duphaston should be taken from the 5th to the 25th day of the cycle, 10 mg twice a day, and first treat the hyperplasia, and then only get pregnant.

2011-10-29 11:51:58

Julia asks:

Good afternoon
I take Luteina vaginal as prescribed by a doctor from the 15th to the 25th day of the cycle, 3 tons * 2 times a day.
Today is the 23rd day and my BT has dropped from 37.1 to 36.9, my stomach hurts like a period and it starts to bleed, you can say that it smears profusely.
Tell me this is normal despite the fact that I take progesterone and there are still 6 days until the end of the cycle.
Yes, I also did ovulation tests and my husband and I tried hard in this cycle.
Thank you in advance, I will be very grateful for the answer, since there is no phone number for my doctor and now is the weekend.

Responsible Gunkov Sergey Vasilievich:

Dear Julia. The use of this drug does not imply such a manifestation. Consultation of a specialist is necessary, delay is not permissible.

happens normally. You should be aware of the nuances of this phenomenon, since it always has a basis.

    Ovulation process

    ON A NOTE! If successful before menstruation, the expectant mother finds out about the presence of pregnancy much later than it could be in a normal cycle.

    Time of menstruation

    With exit and absence, the cycle shifts completely. The woman begins to worry because pregnancy tests show a negative result, and menstruation does not come. A reasonable act in this case would be to contact the antenatal clinic. The following manipulations will help in making a diagnosis:

    • Ultrasonography.
    • Analysis .

    As part of the survey, the patient can provide information about the sensations that have been experienced for the past few days. It is quite possible that attended experienced pain in the lower abdomen.

    For some of the fair sex, libido may increase during the exit period, mood and attitude towards the environment change.

    Menstruation in this situation will come no earlier than two weeks later. An ultrasound scan will reveal the corpus luteum that produces progesterone. Menstruation will begin only after its decline, when corpus luteum will disappear completely.

    The nature of the flow of menstruation will not differ from the usual state. Its duration and intensity will remain the same. To avoid this phenomenon, a woman must adhere to the following rules:

happens normally. You should be aware of the nuances of this phenomenon, since it always has a basis.

    Ovulation process

    ON A NOTE! If successful before menstruation, the expectant mother finds out about the presence of pregnancy much later than it could be in a normal cycle.

    Time of menstruation

    With exit and absence, the cycle shifts completely. The woman begins to worry because pregnancy tests show a negative result, and menstruation does not come. A reasonable act in this case would be to contact the antenatal clinic. The following manipulations will help in making a diagnosis:

    • Ultrasonography.
    • Analysis .

    As part of the survey, the patient can provide information about the sensations that have been experienced for the past few days. It is quite possible that attended experienced pain in the lower abdomen.

    For some of the fair sex, libido may increase during the exit period, mood and attitude towards the environment change.

    Menstruation in this situation will come no earlier than two weeks later. An ultrasound scan will reveal the corpus luteum that produces progesterone. Menstruation will begin only after its decline, when corpus luteum will disappear completely.

    The nature of the flow of menstruation will not differ from the usual state. Its duration and intensity will remain the same. To avoid this phenomenon, a woman must adhere to the following rules: