When does the 2nd trimester begin?

Question

Doctors have been telling be it begins the 12th week then the ultrasound person told me the 14th week when the heck is it? lol I was so glad I made it to 12 weeks and I'm going to be 13 weeks in two days

Answer

If you actually divide it into 3 it's at 13 weeks and 3 days exactly.

Answer

I see all the different answers and have decided to just choose 13 weeks lol

Answer

13 weeks is the start of the second trimester

Answer

When I google it all the graphs come up with the second beginning at 13 weeks. I had one app that said 12. I don't know where so many people get 14.

Answer

The 13th week is the beginning of the second trimester, which technically means 12w1d! Here's what Glow says..

Answer

I asked my midwife the same thing at my 12 week appointment yesterday and she said it begins at 13 weeks.

Answer

Week 13

Answer

14 weeks

Answer

ACOG says 14 weeks. 
https://www.acog.org/Patients/FAQs/Prenatal-Development-How-Your-Baby-Grows-During-Pregnancy

Answer

my doctor told me 13

When does the 2nd trimester begin?

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