how long is first trimester?

Question

I just want to know how long is first trimester. I get between 12-14 weeks. I need to be accurately right. Thank you ladies😘

Answer

Here's what I go by

Answer

I've always been told 12 marks the end of first trimester and beginning of second.

Answer

40 weeks divided into 3 equal parts is 13 weeks and 2-3 days for each trimester.

Answer

13 weeks

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