During ovulation when is the egg released
How Long Does Ovulation Last Each Month?
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Read more about our vetting process.Ovulation is a monthly occurrence for women of childbearing age. It usually takes place around day 14 of a 28-day menstrual cycle. During this process, an egg is released from one of your ovaries and travels from your fallopian tube to your uterus.
The release of an egg isn’t a spontaneous occurrence. Rather, different factors take place prior to ovulation. Follicles in one of your ovaries start to mature between days 6 and 14 of your menstrual cycle.
Around days 10 and 14, an egg develops from one of these follicles. This egg is then released from the ovary on day 14.
Some women don’t give much thought to their menstrual cycle or track ovulation. But ovulation plays a big role in conception. So if you’re planning a family, it helps to know how long ovulation lasts.
Each month during ovulation, one egg is usually released. But some women may release more than one egg within 24 hours of each other. After ovulation, the mature egg is ready to be fertilized by sperm, which results in conception and a pregnancy.
If you don’t fully understand ovulation and its role in becoming pregnant, you may believe you can get pregnant any time during the month. But the reality is you’re only fertile a few days out of any given month, around the time of ovulation.
A normal ovulation cycle lasts for about 24 hours each month. Once an egg is released from an ovary, it will die or dissolve within 12 to 24 hours if it’s not fertilized. If fertilization doesn’t occur, the egg and your uterine lining will shed. This results in menstrual bleeding about two weeks later.
Although ovulation is a one-day occurrence each month, don’t think you can only get pregnant one day out of the month. Conception can occur within a six-day window, the five days leading up to ovulation and the day of ovulation.
This is because sperm can live in the female body for up to five days. If you have intercourse a few days prior to ovulation or during ovulation, there may be sperm remaining in your body to greet an egg as it travels down your fallopian tube.
Conception takes place in the fallopian tube, not your uterus. An unfertilized egg dissolves after a day, but a fertilized egg continues its journey down the fallopian tube into the uterus. A fertilized egg implants or attaches to the uterus 6 to 10 days after conception.ADVERTISING
Some women ovulate without noticing any changes to their body, but others can recognize signs of ovulation. It’s important to plan intercourse during your fertile days if you’re intending to have a baby. The good news is that there are ways to know when you’re ovulating.
- Look for changes in your cervical fluid. If you notice cervical discharge or fluid, this is a sign that you’re ovulating, or that ovulation will occur within the next few days. Cervical fluid can appear clear, wet, stretchy, or stringy. It may look similar to egg whites.
- Check for a change in basal body temperature. This refers to your temperature while you’re at rest. Your body temperature may slightly increase during ovulation. The only problem with this method is that some women don’t experience a higher body temperature until two or three days after their fertile time. So by the time you notice an increase in basal body temperature, ovulation may have already occurred.
Still, a basal thermometer is a useful tool for monitoring your body temperature and pinpointing ovulation. You can purchase an ovulation predictor kit from a pharmacy or online.
Along with changes to your cervical fluid and a higher body temperature, other signs of ovulation may include:
- cramping
- sore breasts
- bloating
- higher sex drive
Some women of childbearing age don’t ovulate. Different factors can affect your ability to release an egg. One example is a condition called polycystic ovary syndrome (PCOS). In PCOS, a woman’s levels of the sex hormones estrogen and progesterone are out of balance.
This leads to the growth of ovarian cysts (benign masses on the ovaries). PCOS can cause problems with a women’s menstrual cycle, fertility, cardiac function, and appearance.
An overactive or underactive thyroid can also stop ovulation, as well as cause premature menopause. Likewise, some women don’t ovulate when under stress. If you’re having difficulty conceiving, or if you think you’re not ovulating, consult your doctor for fertility testing.
Keep in mind that you may still get a period each month, even though you don’t ovulate. This is because your uterine lining will thicken and prepare for the possible arrival of an egg regardless of whether ovulation occurs.
If you don’t ovulate, you’ll still shed the uterine lining and have menstrual bleeding. But your cycle may be lighter and shorter than normal. A short, or long, cycle may be a sign that you are not ovulating. Most women who have normal cycle lengths of 28 to 35 days are ovulating.
Understanding your menstrual cycle and how ovulation works is key to family planning.
Ovulation occurs once a month and lasts for about 24 hours. The egg will die if it’s not fertilized within 12 to 24 hours. With this information, you can start tracking your fertile days and improve your chances of conceiving.
Calculating, Timeline, Pain & Other Symptoms
What is ovulation?
Ovulation is a phase in the menstrual cycle when your ovary releases an egg (ovum). Once an egg leaves your ovary, it travels down your fallopian tube where it waits to be fertilized by sperm. On average, it happens on day 14 of a 28-day menstrual cycle.
Ovulation and your menstrual cycle
The process of ovulation begins when your hypothalamus (a part of your brain) releases gonadotropin-releasing hormone (GnRH). GnRH causes your pituitary gland (a gland in your brain) to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
Between days six and 14 of your menstrual cycle, FSH causes follicles (small sacs of fluid in your ovaries that contain a developing egg) in one ovary to begin to mature. During days 10 to 14 of the cycle, only one of the developing follicles forms a fully mature egg. Around day 14 in the menstrual cycle, a sudden surge in LH causes the ovary to release this egg. This is ovulation. After ovulation, the hormone progesterone rises which helps prepare your uterus for pregnancy.
Ovulation, conception and pregnancy
Once ovulation occurs, your egg travels through your fallopian tube. It’s in your fallopian tube that your egg meets sperm for fertilization. If conception occurs (sperm fertilizes your egg), the fertilized egg travels down to your uterus. After about a week, the fertilized egg (now a blastocyst) attaches to the lining of your uterus. This is called implantation. Release of the hormones estrogen and progesterone causes the endometrium to thicken, which provides the nutrients the blastocyst needs to grow and eventually develop into a baby. As cells continue to divide — some developing into the fetus, others forming the placenta — hormones signal your body that a baby is growing inside your uterus. This also signals your uterus to keep its lining, which prevents you from getting your period. Not getting a period is usually the first sign you’re pregnant.
When does ovulation occur?
In an average 28-day menstrual cycle, ovulation occurs about 14 days before the beginning of your next menstrual period. The exact timing varies — your cycle length may be longer or shorter. You may find it helpful to track your menstrual cycle using an app on your phone or a calendar. This can help you determine when ovulation is most likely to occur. Most people will have a period 14 to 16 days after ovulation, regardless of the length of their overall cycle.
How many hours does ovulation last?
An egg only survives 12 to 24 hours after ovulation. If sperm doesn’t’ fertilize the egg, your body reabsorbs it. Unlike your egg, sperm can survive for several days in your body.
How do I know I’m ovulating?
Pinpointing ovulation can be tricky. There are several methods people use to track their menstrual cycle and estimate when ovulation occurs. Since each method has its drawbacks, it’s always best to use more than one for the most accurate answer.
Menstrual cycle
Ovulation happens at around the midpoint of your cycle if you have a 28-day cycle (day 14). However, a “normal” cycle is anything between 21 and 35 days, so this means ovulation is unique to your menstrual cycle. Keep track of your cycle on paper or on an app on your phone for several months. Take note of any unusual symptoms. Most people ovulate 14 days before their period begins, regardless of cycle length.
Calendar method
People using the calendar method to predict ovulation, analyze six months of menstrual cycles to determine when they’re fertile. To calculate when you may be ovulating, you find your shortest cycle and your longest cycle in a six month period. You subtract 18 days from your shortest cycle and 11 days from your longest cycle. These two numbers give you the days in your cycle you’re most fertile. For example, if your cycle lengths are 31 and 18, your fertile time is day 10 to 20 of your cycle.
Cervical mucus
Cervical mucus is a vaginal fluid produced by your cervix. Your cervical mucus goes through stages during your menstrual cycle. Your cervical mucus is thick, white and dry before ovulation. Just before ovulation, your cervical mucus turns clear and slippery (like egg whites). This consistency makes it easy for sperm to swim up to meet your egg.
Basal body temperature
Your body temperature increases slightly during ovulation (typically about 0.5 to 1 degree). Take your temperature every morning using a digital thermometer meant specifically for measuring basal body temperature. This method only works if you take your temperature before you get out of bed and before you eat/drink. Record your results for several months and note what day of your cycle a temperature increase occurs.
Ovulation kits
Ovulation kits work similarly to at-home pregnancy tests because you pee on an indicator strip in the comfort of your own home. They work by detecting LH (luteinizing hormone) in your pee. LH is the hormone that surges before ovulation. A positive result means you’re about to ovulate (usually within 36 hours).
What are the symptoms of ovulation?
Every person is different and not everyone has signs of ovulation. In those that do, the most common symptoms are:
- Tender breasts.
- Bloating.
- Minor pelvic or abdominal pain.
- Light bleeding or spotting.
- Changes in the position and firmness of your cervix.
- Increased sex drive.
- Heightened sense of smell, taste or sight.
- Mood changes.
- Appetite changes.
How many days during ovulation can you get pregnant?
Even though your egg only lives for 24 hours, sperm can live in your uterus for between three and five days. This means you can get pregnant from having sex from about five days before ovulation to one day after ovulation. If pregnancy is your goal, it’s better to have sperm already in your body when you ovulate. The highest probability of conception occurs when intercourse takes place one to two days before ovulation and on the day of ovulation.
Is pain during ovulation normal?
Yes, many people experience ovulation pain. Ovulation pain (or mittelschmerz) is cramping or pelvic pain that happens around ovulation. You typically feel the pain in your lower abdomen and pelvis, in the middle or on one side. Ovulation pain may happen when an egg bursts from a follicle (the sacs in your ovaries that contain eggs). It can even cause light bleeding.
Pain during the time of ovulation may also be caused by a medical condition, so it’s best to contact your healthcare provider to be sure the pain isn’t something more serious.
What happens if I’m not ovulating?
Certain health conditions or life events may affect ovulation or cause you to stop ovulating. Some of these are:
- Breastfeeding (chestfeeding) or hyperprolactinemia.
- Menopause.
- PCOS (polycystic ovary syndrome).
- Primary ovarian insufficiency.
- Amenorrhea from things like high or low body fat, excessive stress or fatigue or excessive exercise.
If your period is irregular or you go months without a period, you may have not be ovulating. Contact your healthcare provider if this is the case so they can rule out any serious conditions.
Do you still ovulate if you’re on birth control?
No, if you’re taking birth control pills or other hormonal contraception as directed, you shouldn’t ovulate. Keep in mind, this is only the case if you’re using pills, patches, IUDs or other devices exactly as prescribed. The hormones in birth control work by stopping ovulation and thickening cervical mucus (which makes it harder for sperm to swim).
Can you ovulate but not get your period?
Yes. You can ovulate but not get your “period.” Technically, if you’re ovulating regularly, you should also get your period regularly. However, it’s possible to get your period without actually ovulating and to ovulate but not have a true period.
Can medicine help you ovulate?
Yes, there are fertility medications to induce ovulation. Talk to your healthcare provider about your symptoms and goals, such as if you wish to become pregnant. They can work with you on the best treatment based on your condition.
A note from Cleveland Clinic
Ovulation is a process that occurs during your menstrual cycle. The exact timing of ovulation varies from person to person and even from cycle to cycle. Without ovulation, it’s hard for you to get pregnant or have regular menstrual periods. There are many methods available to help you predict ovulation. Knowing when you ovulate can help you either achieve a pregnancy or avoid a pregnancy. There are several health conditions that affect ovulation. Contact your healthcare provider if you’re concerned that you’re not ovulating.
All about ovulation. Frequently Asked Questions
1. Is the maturation of several eggs at the same time a rarity for a healthy woman?
Egg maturation is a complex process that depends on the hormonal activity of the body. It is known that the maturation of most rudimentary germ cells occurs in utero. Starting from adolescence, under the influence of pituitary hormones, cyclic changes occur in the ovaries. The fate of each follicle is under the control of the endocrine systems, from which subsequent events occur - the growth of follicles, the choice of the dominant (leading), egg maturation, ovulation and the formation of the corpus luteum. As a rule, in humans, 1 egg matures in a cycle. The maturation of multiple eggs is rare for women. Most often, this can be in a couple in whose family twins were born. Also, the maturation of several eggs occurs in ART programs (assisted reproductive technologies). During the programs, several eggs are grown and fertilized. nine0005
2. How does a woman's age affect ovulation? Is a cycle without ovulation normal?
A woman's age is an indisputable argument in assessing the functional state of a woman's reproductive system. To date, the main patterns of the processes of follicle growth, ovulation and the development of the corpus luteum have been determined, and they are associated, in particular, with the hormonal regulation of the body. With age, the number of follicles in a woman's ovary decreases and the quality of the eggs changes. The process of "aging of the ovaries" begins by the age of 30, and after 37 years, the number of follicles from which eggs mature sharply decreases. Although within the age, especially older reproductive age, there are individual characteristics due to human genetics. However, the age of loss of the ability to conceive and the age of loss of hormonal function by the ovaries, as a rule, do not coincide. Between the ages of 40 and 45, a woman loses the ability to conceive because there are few cycles with ovulation, but she can still have menstrual cycles and hormonal activity of the ovaries for another 10 years. nine0005
Anovulatory cycles are considered normal during the year when the menstrual function is established in adolescents, while taking contraceptives. For a short time, there may not be ovulation during stress, illness. Anovulatory cycles are also possible in healthy women (1-2 times a year). The constant absence of ovulation in the reproductive age is not the norm and requires consultation, examination, medical treatment, as it indicates a disease and the formation of infertility in a woman.
3. What diseases disrupt the maturation of the egg?
There are several groups of diseases that disrupt the maturation of the egg. Often several diseases are detected at the same time that affect ovulation and lead to infertility in a woman.
1. The psychological state of a woman (chronic stress).
2. Mental illness.
3. Genetic diseases.
4. Benign and malignant tumors of various organs and systems. nine0005
5. Diseases of organs such as the pituitary gland, thyroid gland, adrenal glands, pancreas, mammary glands, ovaries, which can cause changes in hormonal status
6. Inflammatory diseases, especially of the reproductive organs.
7. Obesity and other metabolic disorders.
4. Is measuring basal body temperature an indicative method? Can ovulation occur at a temperature below 37 *. Can the temperature rise and ovulation not occur? nine0004
Measurement of basal body temperature (BT) is a functional diagnostic test that allows you to assess the hormonal function of the body and indirectly determine the fertile phase of the menstrual cycle. The temperature is influenced by many factors of the physical and psychological state of a woman: sleep disturbance, disease, stress, sexual intercourse. In this regard, the change in BBT is not the main, but an auxiliary method for determining ovulation in a woman and the state of her hormonal levels. The result of the measurements is entered into a special schedule. In the first half of the cycle, it is below 37*, the day before ovulation the temperature drops, and during ovulation it rises by 0.3 - 0.6* and stays at this level until the end of the cycle, for at least 12 days (within 37.0 - 37.4*). 2-3 days before the onset of menstruation, BBT begins to decline, reaching about 37 * by its beginning. The difference between the first phase and the second phase must be at least 0. 4 - 0.5*. The perfect schedule is rare. Options for BT can be varied, and each feature indicates certain violations. As a rule, the difference between the average value of BT 1 and 2 phases is less than 0.4 * - the egg does not mature. A more detailed consultation on the results of BT and ovulation is given individually by a doctor in each specific situation. To establish ovulation, several parameters of a woman’s examination are analyzed at once: BT, ultrasound of the ovaries and uterus, blood hormones by phases of the menstrual cycle, as well as examination and questioning of the patient. A low temperature in both phases (for example, 36.0 - 36.5 *) while maintaining a difference of at least 0.4 * is also a normal individual phenomenon. nine0005
5. Can ovulation tests lie? Is a positive test always an indicator that ovulation has occurred?
Ovulation is the release of an egg from the ovary, which is ready for fertilization and is controlled by hormones. When the follicle reaches a certain size and functional activity, it breaks, through which the egg leaves the follicle. Between the process of preparing for ovulation and ovulation itself is about 36-48 hours. If the egg is fertilized, then by day 4 the embryo enters the uterus and implantation occurs. If fertilization does not occur, then the egg dies. nine0005
On average, ovulation occurs on the 14th day of the menstrual cycle (with a 28-day cycle). Deviation from the mean is observed quite often and is not a pathology.
Urine ovulation tests are based on the determination of luteinizing hormone (LH) in urine. Tests are single and multiple. The tests are not completely accurate. The reasons for false negative results for ovulation can be:
- different testing times;
- the amount of liquid drunk on the eve of testing; nine0005
- different test sensitivity;
- each woman's body produces a different amount of LH;
- if you test once a day with an irregular cycle, it is possible to miss ovulation.
Unfortunately, ovulation tests do not show ovulation, but LH levels over time.
An increase in LH levels is characteristic of the ovulation phase, but may be elevated with hormonal dysfunction, postmenopause, lean ovary syndrome, kidney disease, ovulation stimulation after hCG injections. nine0005
Therefore, relying only on tests for hormonal dysfunctions is not worth it. It is necessary to additionally use ultrasound to determine the presence and timing of ovulation.
How to independently determine the beginning of ovulation and not make a mistake
Ovulation is the release of an egg from the follicle. It can be tracked with an ultrasound. Or you can do an ovulation test. But some women claim that they feel it without any auxiliary means. Are you one of those?
Ovulation Formula
Knowing when ovulation occurs is important for two questions: if a woman wants to get pregnant, or if a woman chooses a calendar method of contraception. The fertile period - the period when fertilization can occur - lasts approximately six days: five days before ovulation and the day of ovulation. The highest probability of conception is within two days before and on the day of ovulation.
Calculating the day of ovulation mathematically makes sense if you have a very clear and stable menstrual cycle. The length of the first phase of the cycle varies. The second phase is more stable and lasts 14 days. Accordingly, to calculate the day of ovulation, it is necessary to subtract 14 from the cycle length. In an ideal 28-day cycle, ovulation occurs exactly in the middle: 28-14 = 14. In a short cycle, it will occur earlier: for example, with a cycle length of 24 days, ovulation will have to around day 10. In the long - later: 33-14 \u003d 19. For women whose menstrual cycle fluctuates by several days, the formula becomes more complicated: you need to take into account the duration of both the shortest and longest cycles, calculate the average. Still, the figure will only be approximate.
A woman can determine the days favorable for conception if she pays attention to the changes that occur to her on certain days of the cycle. These changes are most noticeable in the uterine mucosa and cervix.
Mucus
Neck glands produce mucus. Usually it is thick: a real cork that closes the cervical canal and prevents infections from passing into the uterus. In such thick mucus, sperm cells quickly lose their mobility, and it is difficult for them to rise into the uterine cavity. But the main (dominant) follicle growing in the ovary, from which the egg will be released, produces the hormone estradiol. The more estradiol, the more cervical mucus becomes and the thinner it is. On the eve of ovulation, it becomes extensible, like egg white. In some women, this viscous transparent discharge in the middle of the cycle is very noticeable. For some - a few days before ovulation, for others - only on the day of ovulation itself. This is individual. nine0005
Pain
Ovulation may be indicated by pain in the lower abdomen on the days of the cycle, not associated with menstrual bleeding. The pain can be in the lower abdomen in the center or on the right / left - depending on which ovary the dominant follicle matures. The pain is often of a pulling nature. It may be accompanied by slight bloating or a feeling of fullness in the lower abdomen. At first, the pain is slight, but within a couple of days it can intensify. These pains are associated with an increase in the level of biologically active substances in the body of a woman before ovulation - prostaglandins. Prostaglandins dissolve the wall of the follicle and ovarian tissue so that the egg can be released into the abdominal cavity, and from there into the fallopian tube. The "side effect" of prostaglandins is pain. Just like a change in the nature of cervical mucus, pain associated with ovulation may occur only on the day of ovulation itself or be noted on the eve of ovulation and even a day or two after it. nine0005
How to understand that pain is associated with ovulation
It is important to understand that pain in the lower abdomen can be associated with much less pleasant causes than ovulation.
How to understand that this is exactly “it”.
- The pain lasts 1-3 days and goes away on its own.
- Pain recurs in several cycles.
- Approximately 14 days after such pain comes the next menstruation.
Ovulation pain is moderate and does not require pain medication. Severe pain indicates a health problem. If the pain on the days of the alleged ovulation is severe, you need to contact a gynecologist. Other alarming symptoms accompanying pain in the lower abdomen and which may indicate a problem with the uterus and appendages: fever, increased discharge (leucorrhoea) from the genital tract, discoloration of the leucorrhoea from transparent or white to yellow-green, spotting. By the way, taking painkillers and NSAIDs (non-steroidal anti-inflammatory drugs) on the days of expected ovulation or shortly before ovulation can reduce the chances of conception. nine0005
Technical aids
Home test
Ovulation can be determined with a home test available from a pharmacy. The principle of the study is based on determining the concentration of luteinizing hormone (LH) in the urine. The level of LH in women fluctuates depending on the period of the menstrual cycle. Just before ovulation, it reaches its maximum values. The ovulation test makes it possible to register the peak of LH release into the blood. After the maximum LH surge, ovulation occurs within the next 36 hours. Therefore, with a positive ovulation test, this and the following days are most favorable for conception. nine0005
Folliculometry
This is a series of ultrasound examinations carried out during one or more menstrual cycles. During folliculometry, the growth of follicles and changes in the endometrium are assessed according to the day of the menstrual cycle, and the fact of ovulation is also ascertained. The average size of the dominant follicle, at which ovulation can occur, is 18-25 mm. If during folliculometry the size of the dominant follicle is 18 mm, this and the next few days are most favorable for pregnancy. The next folliculometry to confirm the fact that ovulation has occurred is desirable to do in 3-4 days.