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A member asked:
Do you count the first day of your last period as the starting day of your pregnancy ?
A doctor has provided 1 answer
No: The way we date pregnancies is a little confusing. The first day of a pregnancy is dated based on your last menstrual period because women typically don't know when they ovulate (and conceive) but the do know when their last period was. So really, embryos are 2 weeks younger than the assigned age we give them. Thus, when a woman misses her period, we say she's 4 weeks pregnant, when really...
Answered 8/7/2013
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