hail fleckerbug, queen of the morons..

[fleckerbug.livejournal.com]

Sorry but I can't for the life of me remember... do you ovulate ~14 days after the end of your period or ~14 days from the beginning? And does pregnancy count from the first day of your last period or the last day? Thanks.

Comments

[willow-starr.livejournal.com]

No. You ovulate 14 days after your period starts. Counting the days of your cycle begins on the first day of menstruation, the last day is the day before your next period.

[benthicblue.livejournal.com]

Actually, it would be 14 days before your period begins.

Assuming you had a perfect, clockwork 28 day cycle, it be 14 days either way, which makes it confusing. For most women, you ovulate 10 - 14 days before your period begins. First day of your period is cycle day 1, so in a 28 day cycle, you would ovulate anywhere from cycle day 14 - 18. If you had a 32 day cycle, you would ovulate on between cycle days 18 and 22, etc. etc.

Of course, there are tons of things which can affect this. It's possible to have regular periods without ovulating at all as well as a host of other issues like short luteal phases.