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So i have a couple baby books and one says you dont start your second trimester till week 14 and another book says you start your trimester after week 12. i am 12w 1d, so am i in my second trimester or do i stil have two more weeks?
It's very confusing but the second trimester would only start at 12 weeks if those first 3 months were only 28 days each, which they aren't, so it should start at 13 1/2, or 14 just to be safe/round off
I was told the end of 13 weeks for each trimester. So the end of 13 for the first, the end of 26 for the second, then the third (which of course you're in till you give birth!) would go to the end of the 39th which puts you at 40 weeks.
Jessi, wife to Aaron (10/02/04), mom to Madilyn (4/01/09) and Lyla (02/01/12)