what week is 2nd trimester

Question

this may be a silly question, but when do I actually start 2nd tri? I've seen post that says starting week 14, I've also seen posts stating it's 12 weeks. I'm currently 12+2 days..

Answer

This is from BabyCenter:

Answer

14

Answer

14 weeks (:

Answer

I was told 14 by a lot of people but my OB says 13. So honestly, I guess it just depends on who you ask.

Answer

Technically, it is 13w3d. So I always go with 14 weeks.

Answer

At 13 my OB said I was in the second trimester so I went off of that

Answer

This app tells me I’m in my second trimester tomorrow. At 12 weeks exactly