Pinpointing Patterns of Ovulation Timing
Ovulationoccurs when hormonal changes in the body signal theovariesto release a mature egg.
Ovulation is a phase of themenstrual cycle.
Most people who menstruate ovulate every month.

Illustration by Michela Buttignol for Verywell Health
This article explains how to track ovulation based on different cycle lengths.
Illustration by Michela Buttignol for Verywell Health
When Does Ovulation Occur?
Ovulation usually occurs in the middle of the menstrual cycle.
Ovulation happens in two phases after the menstrual period.
It prepares the body for conception.
During ovulation, the body experiences hormonal changes that signal the ovaries to release a mature egg.
The level offollicle-stimulating hormone (FSH)also rises during this time.
Once released, the egg travels to the fallopian tubes and may be fertilized by sperm.
The exact timing of ovulation varies for everyone.
When Is Ovulation Week for Atypical Cycle Lengths?
Ovulation timing depends on the length of your menstrual cycle.
In a 28-day cycle, ovulation usually occurs on day 14.
Ovulation usually lasts about 12 to 24 hours.
It may be helpful to track yourmenstrual cycle phasesto recognize when youre ovulating.
People takingbirth controldo not ovulate.
Most people begin ovulating again after stopping birth control for one month.
you could do this by monitoring your physical symptoms and using apps or hormonal monitors.
Start by tracking your menstrual cycle for several months.
Keep track of the day you get your period and how long it lasts.
This method is most helpful for people who have regular menstrual cycles that range from 26 to 32 days.
These apps track your menstrual phases and estimate when ovulation is most likely to occur.
Most tests require a daily urine sample to test for luteinizing hormone.
Once the LH level starts to surge, you are likely to ovulate.
A person may not menstruate or ovulate regularly due to several possible causes.
HCG is a hormone that increases during pregnancy.
Talk with your healthcare provider about the potential benefits and risks of HCG injections for fertility treatments.
A normal cycle usually lasts 24 to 38 days.
If your cycle is shorter than 24 days or longer than 38 days, see a healthcare provider.
These symptoms could be a sign of a chronic health condition.
Missed periods can be a sign of pregnancy.
Summary
Ovulation is the process of the ovaries releasing a mature egg each month.
Ovulation is a phase in the menstrual cycle and usually occurs in the middle of the cycle.
People with a 28-day cycle likely ovulate around day 14.
If your cycle is longer or shorter than 28 days, your ovulation day may vary.
Ovulation usually lasts about 12 to 24 hours.
If you are trying to conceive, most healthcare providers recommend having sexual intercourse right after ovulation has occurred.
To track your ovulation days, consider keeping track of your menstrual cycle with an app or calendar.
You may also want to try an ovulation monitor that tests your urine for hormone level fluctuations.
Eunice Kennedy Shriver National Institute of Child Health and Human Development.About menstruation.
2018;34(9):1587-1594. doi:10.1080/03007995.2018.1475348
MedlinePlus.Ovulation home test.
Soumpasis I, Grace B, Johnson S.Real-life insights on menstrual cycles and ovulation using big data.Hum Reprod Open.
2020;2020(2):hoaa011.
doi:10.1093/hropen/hoaa011
Planned Parenthood.Do I ovulate while taking birth control pills?
Centers for Disease Control and Prevention.Appendix F: Classifications for fertility awareness-based methods.
Owen M.Physiological signs of ovulation and fertility readily observable by women.Linacre Q.
2019;24(3):209-215. doi:10.1080/13625187.2019.1605503
MedlinePlus.Pregnancy - identifying fertile days.
Office on Womens Health.Ovulation calculator.
2022;9:858977. doi:10.3389/fmed.2022.858977
Office on Womens Health.Trying to conceive.
Centers for Disease Control and Prevention.Diabetes and polycystic ovary syndrome (PCOS).
2020;14(3):173-179. doi:10.18502/jfrh.v14i3.4670
Office on Womens Health.Your menstrual cycle.
American College of Obstetrics and Gynecology.Trying to get pregnant?
Heres when to have sex.