Which one that is second trimester 12, 13, or 14 weeks?

Question

I am 13 weeks today, The website I have been on one they said 12 weeks are in second trimester, I checked on another website one said 13 weeks are in second trimester, an other website I checked again said 14 weeks are in trimester, I was so totally confused!!! I don't know which one is in second trimester? Most people said 13 weeks but I still confused because why would they say 12 or 14 is in second trimester if it really 13 weeks?

Answer 1

Actually 12 weeks in the ending of your first trimester. 13 weeks is the beginning of your second.

Answer 2

We're due the same day!!! I'm pretty sure it's 13 weeks, but I've heard all three too.

Answer 3

I'm actually confused about that as well and i am 13 weeks.

Answer 4

If you divide the forty weeks evenly, then technically when you are 13 weeks and 5 days you are in your second trimester.  Everybody goes by something different though, so choose the one that you want and stick with it.  Good luck!

Answer 5

It is confusing. I always used this when I was pregnant;

http://baby2see.com/pregnancylength

Answer 6

You can consider yourself to be in your 2nd trimester now.  It's all confusing and everyone will have a different opinion.  My pregnancy calendar does it different then anything I have found on the web, but it's the same time line my doctor follows so it works for me.  

Congratulations and good luck on the rest of your pregnancy!

Answer 7

its is 12 weeks that you start your 2nd trimester