Determining due date and conception date??

Question

Hello all! This may sound like a crazy question but - my LMP was 9/21, and according to glow I ovulated on 10/8. I just got my BFP and some apps are calculating that I am 3 weeks preggo. Is that even possible? Wouldn’t I just be 10 days since I’m 10 dpo??

Answer

Pregnancy weeks are calculated from start date of last period because it is hard to know an exact fertilization/conception date for multiple reasons. So for the first 2 or so weeks of a pregnancy you are technically not pregnant yet...weird but that's how it is done. Congrats!

Determining due date and conception date??

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