According to the American Pregnancy Association, it's almost impossible to know the exact date of conception unless a woman has undergone artificial insemination or in vitro fertilization. Typically, for women with regul... More »

You can calculate the month you conceived a baby by using the due date, according to BabyMed. BabyMed provides a conception calculator that allows you to enter your due date and get a five-day window of when you conceive... More »

Women who wish to conceive boys can follow the Shettles method or the Whelan method, using an ovulation calendar to time intercourse in relation to the date of ovulation. Both report varying levels of success but neither... More »

To calculate the date of conception, a woman with regular menstrual periods counts 11 to 21 days from the first day of her last cycle, according to the American Pregnancy Association. Since most women do not know the exa... More »

To estimate the date of conception, a woman counts 11 to 21 days from the first day of the last period, according to American Pregnancy Association. While this is a large range of days, it is an average of conception for... More »

Calculated conception dates are always an estimate, the American Pregnancy Association explains, and the presumed date of conception is generally between 11 and 21 days after the first day of the woman's last menstrual p... More »

A conception calendar can help a woman determine the best dates to attempt to conceive a pregnancy, or help an already pregnant woman determine the approximate date on which she conceived. Conception is the initial momen... More »