When does ovulation start in a woman?

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Understanding your menstrual cycle can help you when you want to conceive and when you want to prevent unwanted pregnancy. If you want to find out when does ovulation start in a woman, then you are on track to take control of your reproductive health.

When does ovulation start

Tracking ovulation can help women who are trying to conceive

What is ovulation?

Every month, a woman’s ovary releases a mature egg which will travel down the fallopian tube to get ready for fertilization. The journey of the egg from the ovary through the fallopian tube in readiness for fertilization is known as ovulation.

Before the egg moves from the ovary, the lining of the uterus will thicken to prepare for the fertilization of the egg and for conception to occur. If the egg is not fertilized, then the uterine lining breaks down and passes out through the vagina along with blood—a process known as menstruation.

When does ovulation start?

It is possible to when you will ovulate if you know how to calculate your menstrual cycle. A woman’s cycle starts on the first day she gets her period and lasts until the first day of the next period. This simply means that your cycle begins the day your period starts and ends the day you get your next period.

Typically, most women have menstrual cycles that last anywhere from 27-32 days. However, there are women who have cycles that can be longer or shorter than normal.

Different ways of calculating fertile days to know when does ovulation start

Ovulation is also called the fertile period. During this time, there is a high chance of pregnancy if the woman has sexual intercourse.

• For most women, ovulation occurs between day 11 and day 21 of their menstrual cycle. To get an accurate number, count 11 days from the first day of your period and you’ll find that your fertile period falls between then and day 21

• You can also predict ovulation and fertile days by counting 12 – 16 days before the beginning of your next period

when does ovulation start

knowing when does ovulation start can help you prevent unwanted pregnancy

Understanding the phases of the menstrual cycle and when does ovulation start

To answer the question when does ovulation start, you will have to get familiar with the phases of the menstrual cycle.

These include:

Follicular phase
Ovulation phase
Luteal phase

  • Follicular phase

The follicular phase starts on the first day of menstruation and can last from 11 to 21 days. During the follicular phase, the pituitary gland produces FSH— also known as follicle stimulating hormone. This hormone stimulates the ovary to produce follicles, up to around 20 follicles in total, and each follicle stores an egg. Eventually, all the follicles will die off except for the one that will mature into a ripe egg.

At this stage, the lining of the uterus or endometrium will thicken to get ready for fertilization and pregnancy.

  • Ovulation phase

Ovulation occurs when the remaining ripe egg is released from the ovary. Usually, ovulation starts about two weeks (14 days) before the next period—that is if your periods are regular. In the ovulation phase, the pituitary gland produces high levels of the luteinizing hormone otherwise known as LH.

The ripe egg is then released into the fallopian tube and the egg goes on to live for around 24 hours. If there is no sperm to fertilise the egg, it dies off after one day. Ovulation is an important time in pregnancy and conception and knowing when does ovulation start is vital to women who want to take control of their reproductive health.

  • Luteal phase

The luteal phase starts at the end of ovulation and ends on the day you get your next period. After ovulation has taken place, the corpus luteum, which holds the ripe eggs, disintegrates and produces the hormone progesterone.

This hormone helps to thicken the uterine lining in readiness for the sperm to fertilise the egg and implant on a plush uterine lining.

If fertilization occurs and the egg implants on the uterine lining, the body then produces human chorionic gonadotrophin (HCG) as a confirmation of conception. HCG is the hormone you test for when conducting a pregnancy test.

In the case where there is no fertilization and pregnancy, the corpus luteum will die, causing the progesterone production to decrease. This will also cause the uterine lining to shed and flow out as menstruation.

If you are actively trying to conceive, then it is important for you to learn about ovulation. This knowledge is also useful for people who want to prevent pregnancy.

Resources: Womenshealth.gov

American Pregnancy 

Betterhealth.vic.gov

Also Read: Drinking garri during pregnancy and other weird cravings

Written by

Julie Adeboye