What Is Ovulation?

排卵是当一个鸡蛋,或卵子released from the ovaries. After ovulation, the egg then travels to the uterus via the fallopian tubes. If sperm meet up with the egg in time,conception可能发生。

If you're new to trying to get pregnant or just want to know more about how thefemale reproductive systemfunctions, it can be helpful to learn more about ovulation and its role in the process of conception. This article explains more about how ovulation works.

Why It's Important

During each menstrual cycle, reproductive hormones including estrogen and progesterone work together to stimulate the ovaries. In response to those hormones, follicles begin to grow in the ovaries. Inside each follicle is an immature egg, also known as anoocyte, which starts to mature.

Even though several oocytes will start developing at the beginning of each cycle, usually only one dominant egg will be released.If two eggs are released, you may conceive non-identical twins. Incidentally, while two or more eggs may occasionally be released in one cycle, this happens simultaneously, not at different times within one menstrual period.

Ovulation and Conception

While the ovaries are preparing to release an egg, the uterine lining (known as the endometrium) gets ready to receive a fertilized egg, or embryo, by thickening. The body's hormones lead to the thickening and changing of the endometrium.

You might assume that the eggs in the ovary develop from the first stage to ovulation in a month's time, but that's untrue. Individual oocytes develop over several months. They go through various stages until they are either ready to ovulate or stop growing and remain dormant. Hormones, chromosomal issues, structural defects, or chance prevent the other oocytes from fully developing.

也有一种误解,每个卵巢s a turn ovulating every other month. For example, one month the right ovary ovulates. Then, the next month, the left ovary ovulates. In fact, ovulation occurs on whichever side has the most mature ova or ovum in that month. In some people, one ovary may ovulate significantly more often than the other.

When Will I Ovulate?

Ovulation usually occurs between day 11 and day 21 of the menstrual cycle. Each menstruating person ovulates on their own schedule. You've probably heard that ovulation occurs on day 14 of your cycle, but that's just an average benchmark. In fact, even people with 28-day menstrual cycles don't always ovulate on day 14. One study found that fewer than 10% of menstruating people with 28-day cycles were ovulating on day 14.

Usually, when a person says they're ovulating, they're referring to the especiallyfertile period of two to three daysthat precede ovulation. If we assume ovulation occurs somewhere between day 11 and day 21, this extra fertile period can occur as early as day 9 of the menstrual cycle and as late as day 22. That's a wide range! This is why if you want to conceive, it can help to track your own ovulation and fertility signs each cycle.

What to Look For

Most people who menstruate experience certainsymptoms around the time of ovulation. Some symptoms may appear several days before ovulation, while others won't happen until the day before or day of ovulation. These symptoms include changes in sexual desire, an increase in cervical mucus, and sometimes,crampy pain.

One way to detect ovulation is by measuringbasal body temperature, or your temperature when you're completely at rest. By taking your temperature first thing every morning, before you get out of bed, and charting the results, you can look for the telltale rise that signals impending ovulation.

Another option is to useovulation test kits. These tests work a lot like pregnancy tests, in that they detect a particular hormone in your urine. When you get a positive result on an ovulation test, you're approaching ovulation, and youshould have sexif you're trying to conceive.

Be aware that not all ovulation kits are highly accurate and some may be difficult to interpret. In fact, studies show that the reliability of these products ranges from 19% to 99% and that mistiming sex is a key contributing factor in some couples' infertility challenges.So, be sure to vet the accuracy of any test you use. Another option is to have sex every other day over the entire course of your possible fertile days.

Tips for Conception

Conception requires at least one ovum and one sperm. Semen can live up to five days in the female reproductive tract during the fertile window.The human ovum, however, lives forjust 24 hours. Additionally, the ovum must be fertilized within the first 12 hours after ovulation for conception to occur.

This is why you need to have sexbeforeyou ovulate. If you want to get pregnant, sex before ovulation will ensure there are sperm cells waiting to greet the ovulated egg. There's no need to have sex at the very moment of ovulation, but that works, too.

Optimal Timing for Sex

While knowing when you are ovulating can help you time sex for your most fertile days, it's not required. If you have sex three to four times a week, you're bound to have sex around your ovulation period. Ideally, have sex every other day during your fertile window so that the sperm has time to regenerate and mature between copulation.

When Are You Pregnant?

When a sperm cell fertilizes the egg, conception takes place. However, you are not technically pregnant at this moment. The egg must implant in the uterine wall for pregnancy to start.

Likewise, if you aregoing through IVF, you aren't officially pregnant after embryo transfer. Even though the embryo is now inside the uterus, you're not "pregnant" unless the embryo implants itselfinto the endometrium.

Potential Challenges

If you don't experience ovulation symptoms at any time during your cycle, or if you haveirregular periods, you may not be ovulating every month—or at all. Anovulation is when a menstruating person does not ovulate. This condition is apossible signand commoncause of infertility. Other symptoms of anovulation areextremely short or long periodsor acomplete absence of menstruation.

High levels of stress, hormonal abnormalities, extreme weight loss, malnutrition, obesity, thyroid dysfunction, andpolycystic ovary syndrome (PCOS)are some typical causes of anovulation. Treatments include lifestyle changes, such as weight loss or gain, and medicines like fertility drugs to stimulate ovulation.

A Word From Verywell

While couples are often told totry on their own to conceive for at least six months to a yearbefore seeking fertility treatment, if you have symptoms of a problem, that timeline doesn't apply. Talk to a healthcare provider sooner rather than later. Earlier diagnosis can improve yourodds of successful treatment.