second trimester?

Question

So, different apps say different things. Is the second trimester the 12th or 13th week of pregnancy???

Answer

40 weeks divided into 3 equal parts is 13 weeks and 2-3 days so second trimester would start at 13 weeks and 2 or 3 days and third trimester is 26 weeks and 4 or 5 days

Answer

It's the 13th week, but technically when you are 12 weeks, you have completed 12 weeks and are into your 13th week, that's why some say differently

Answer

Nope.  14th

second trimester?

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