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A 35-year-old member asked:

How do i calculate my ovulation day?

2 doctor answers7 doctors weighed in
Dr. Philip Chenette
Fertility Medicine 38 years experience
Day 14-15: Counting the first day of menstrual flow as day 1, most women with regular cycles ovulate on day 14-15. Irregular cycles are much tougher to time prospectively. Best solution is to consider fertility medications to help regulate cycles, using ultrasound to time ovulation. Shorter cycles can indicate problems with ovarian reserve or with the uterus, and should be discussed with an expert.
Dr. Douglas Fronzaglia ii, do, ms
Geriatrics 21 years experience
14 days: Ovulation should occur 14 days after the start of you last menstrual period.

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A 19-year-old female asked:

How do I calculate my ovulation on a 35 day cycle?

1 doctor answer2 doctors weighed in
Dr. Jennifer Mushtaler
Obstetrics and Gynecology 23 years experience
Day 20-21: Normal cycles range from every 21 days to every 35 days. Most women ovulate approximately 14 days prior to the start of a new cycle. So if you cycle every 35 days, you are most fertile around day 21. If you cycle every 28 days, you are most likely fertile around day 14. Simply take the lengths of your cycle and subtract 14 to calculate your most fertile time.
New York, NY
A 26-year-old female asked:

How do I calculate ovulation?

1 doctor answer1 doctor weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Regular cycles?: A woman with very regular periods can estimate her ovulation day this way: mark on a calendar when her next period will begin (that means mark the first day of her next period), and just look back 2 weeks to see her estimated day of ovulation. So, if her next period will start on january 28, then january 14 is her estimated ovulation day. The estimate is +/- 2 days (life is not exact).
A 33-year-old member asked:

Can you calculate when you're ovulating?

3 doctor answers5 doctors weighed in
Dr. Michael Opsahl
Fertility Medicine 43 years experience
Yes - roughly: Ovulation calculation can be reasonably accurate within a few days. I suggest tracking several cycles. Count 14d back from menses, look for day of BBT increase and ovulation day before, OPK gives 12-24hr advanced warning. Do this is you are planning pregnancy to time sex (helpful to me if you need help). Natural family planning has a high failure for most people. Best wishes.

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Last updated Sep 5, 2018

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