Silly question?

[junbait]

This might sound silly, but between how many weeks is considered 1st trimester, 2nd trimester and 3rd trimester?

 

[littlelegs91]

Hi Hun think in the uk it's 12 weeks and the us it's 13 weeks to second tri xx

 

[moter98]

In US it's 13 weeks is 2nd tri and 27 weeks is 3rd tri.

 

[junbait]

Thanks for the replies ladies.

 

[MummyToAmberx]

im in uk always been told 14wk is first day of second tri.
27wk is third.

 

[Selaphyna]

According to the pregnancy book I have, 14 weeks is the start of your 2nd trimester, and 28 weeks is the start of your third.