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  #14  
March 9th, 2013, 08:53 AM
LuvRBx5's Avatar
LuvRBx5 LuvRBx5 is offline
Mega Super Mommy
Join Date: Dec 2007
Location: Canada
Posts: 4,427
Because there is 2 weeks added on before you get pregnant, so if a woman says she's is 4 weeks pregnant, it's like 2 weeks from conception. This is why they estimate from LMP. Pregnancy is approx. 40 weeks, but really you aren't pregnant for the first 2 weeks, so it's more like approx 38 weeks.
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