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A member asked:
I had unprotected sex november 16, 2013 everytime i put that into a online pregnancy calculator under "date of conception" its says im 4 weeks. why?
A doctor has provided 1 answer
Easier calculation: Every pregnancy dating software is based on a 40 week pregnancy. Actually the pregnancy is not 40 weeks but 38 weeks. Not every women knows when they conceive but women know when their last menses occurs. Therefore the dating is from the last menses artificially adding 2 weeks to every pregnancy.
Answered 2/24/2018
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Related Questions
A member asked:
LP was dec30-jan13. Dd nov6. Conception calculator says feb7-13 was sex leading to conception. Not possible. Just curious if u/s can be off a few days?
A doctor has provided 1 answer
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3 doctors weighed in across 2 answers
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