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

[ptilu.livejournal.com]

Well, keep in mind that it's different for all women and there's no sure way to tell which day you ovulate just by looking at the date.

But on average, you ovulate about 14 days *before* the beginning of your next period. Which is also 14 days after the beginning of your last period, IF and only IF you have an ideal 28-days cycle.

About the pregnancy thing, I don't know, hopefully another poster can help you.

[farfalla-dolce.livejournal.com]

First day of yoru last period. I am ttc and so I have been reading fatcs like crazy. :)

[benthicblue.livejournal.com]

A typical woman will ovulate 10 - 14 days before her period begins. This time is known as the luteal phase. It usually takes a few cycles of charting your cyles before you can consistently predict how long your cycles are and when in your cycle you are ovulating.

Pregnancies are usually calculated from the start of your cycle (the first day of your period), so that your pregnancy is actually 2 weeks ahead of the fetus age. This calculation can be thrown off if you didn't ovulate exactly 2 weeks into your cycle (meaning you don't have a perfect 28 day cycle, which I swear, NO ONE actually has). On an ultrasound, the tech can measure the size of the fetus and usually calculate the due date pretty closely.