Can figure it out: Count back 12 weeks and 4 days. That will be the 1st day of your last period. If you know the first day, you don't have to count back. 14 days after the 1st day of your last period is when you got pregnant give or take a day or two.
Answered 12/6/2012
5.4k views
10 weeks 4 days ago: By convention, the weeks of pregnancy begin at the first day of the last normal period, but for a 28 day menstrual cycle, pregnancy does not actually occur until ovulation two weeks later. The time of conception varies with the length of your cycle, for instance if you have a 26 day cycle, you would have conceived 12 days later, and for a 30 day cycle, 16 days later.
Answered 12/6/2012
5.4k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question