When do you hit the second trimester??

AnnaRedhead · February 2011

Is it at the end of your 14th week/start of your 15th week?

julygal · February 2011

The most common I've heard is 13 weeks 3 days, which is roughly 40 weeks divided by 3.

lovemymaddy · February 2011

13 w 3 days is what is common around her but before I came on the bump I always thought it was 12 weeks.

mplesset23 · February 2011

I'm counting it as of 13 weeks. One more week to go for me Big Smile

Geekchick921 · February 2011

Some people say 12 weeks, some say 13 weeks 3 days (40/3) and others say 14 weeks (I guess this one is because you're not actually pregnant the first two weeks of pregnancy). I think 13.3 is the most common cut-off on TB.

amdraza · February 2011

It's 12 weeks, if you go by the development of the baby. That is when all systems/organs have been developed. Then 3rd Tri start at 27 weeks, because developmentally that is when the baby would be able to survive outside of the womb.

But if you go by the gestational philosophy, it's 13 weeks 3 days for 1st Tri, and the 3rd Tri starts at 26 weeks 3 days.

The developmental approach seems more accurate to me, but I still go by the gestational, because that seems to be the norm.

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When do you hit the second trimester??

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