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A member asked:
Early us at 7 weeks. duedate 7/28 ob told said count bk 5 weeks for conception date. 11/4 which is exact day of sex want r chances it's wrong?
A doctor has provided 1 answer
Ob doc is correct...: It is correct to count back 2 weeks less than the number of weeks pregnant (that's why the 5 weeks) to find the conception date, because that's just how doctor's count pregnancy weeks. The exact day of sex is the actual day that the woman had sex, on or within a week on either side of the the estimated "conception date". There is no more exactness to the dating, because all dates are estimates.
Answered 2/21/2014
4.4k views
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