Many women typically ovulate around 12 to 14 days after the first day of their last period, but some have a naturally short cycle. They may ovulate as soon as six days or so after the first day of their last period. And then, of course, there's sperm.

How many days after my period do I ovulate?

Ovulation usually occurs between day 11 and day 21 of the cycle, counting from the first day of the last period. Ovulation usually lasts one day, can happen any time during this window, and it's not always the same each month.

How do I know when I'm ovulating after my period?

If your menstrual cycle lasts 28 days and your period arrives like clockwork, it's likely that you'll ovulate on day 14. That's halfway through your cycle. Your fertile window begins on day 10. You're more likely to get pregnant if you have sex at least every other day between days 10 and 14 of a 28-day cycle.