A member asked:

How many days is it from implantation to baby due date?

A doctor has provided 1 answer

259: Usual pregnancy length is considered 280 days from first day of last period. Implantation generally occurs about 3 weeks after first day of last period, although that can vary a few days. So 280-21 equals 259, time from implantation to due date.

Answered 3/23/2014

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