Home » Calculators » Fertility CalendarFertility Calendar First day of your last menstrual period Cycle Length Please, Enter all values correctly.Fertile Date Before OvulationOvulation DateFertile Date After Ovulation PrevPreviousDate of conception NextHow Many Weeks PregnantNext How useful was this post? Click on a star to rate it! Submit Rating Average rating 4.1 / 5. Vote count: 33 No votes so far! Be the first to rate this post.