Trimesters?

Question

How many weeks are in each trimester? I was always under the impression that the first trimester was weeks 1-12 but someone told me recently it was weeks 1-15. I have also heard weeks 1-13 lol

Answer

13.333 weeks. So if you use a pregnancy wheel, the first trimester ends at 13+2 technically.

Answer

Second trimester starts between 12 and 14 weeks. So I tend to go by 13 weeks as start of second trimester. Technically you start second trimester at about 13+3 but that's faffy haha.

Answer

My ob uses 1/12 weeks 1st tri

Answer

It changes a lot and depends on what resources you use. My doctor uses 1-14 as first. :)

Trimesters?

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