A member asked:

My lmp started feb 1st, i got a positive pregnancy test on the 28th:) is it possible to be 4 weeks pregnant? or is it more likely i am further along?

A doctor has provided 1 answer

Preg. started Feb. 1: Pregnancy dates are always estimates, in a natural pregnancy. Pregnancies are counted from the first day of the last menstrual period, which in this case is Feb. 1, 4 weeks ago. The embryo, of course, is only 1-3 weeks old, because the embryo begins at conception, and conception depends on when ovulation happened (earlier with short cycles, more recently with long cycles).

Answered 3/4/2016

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Thank

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