Take the first day of your last period, ...

Sarebare - October 10th, 2006 7:43 PM
 [Original Comment]

Take the first day of your last period, add 14 days that is the average date of ovulation for a woman on a 28 day cycle. Also it can happen within 2 days before or after this day so there is a 5 day window but this only applies to a 28 day cycle.

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