When does third trimester start?

Question

So I was told by all my apps that tomorrow I start my third trimester (27 weeks tomorrow). My friends and mom are like no not until 28 weeks. But I'm confused because tomorrow makes it 3 months until due date. So which is it 27 or 28??

Answer

American Pregnancy Association says 27 weeks.

Answer

I go by 28 weeks since it’s only a week difference anyways, and that’s what my doctor goes by.

Answer

It’s like 27w and some odd days so most go with 28w. I just go with 27 🤷🏽‍♀️

Answer

I say 27 because of the direct math. 13.333 weeks per trimester so rounded up 3rd would start at 27 weeks. It truly doesn't matter though,  it's just a week.

Answer

I look at it this way - 40 divided by 3 is like 13.333 something so I say the second trimester starts at 26.6 so I just go with 27.

Answer

27 or 28 both something to celebrate

Answer

My doctor says 27 weeks.

Answer

It really doesn’t matter to me because it’s one week difference.

Answer

Where I live it’s 28 weeks

Answer

All the charts I’ve seen so far say 27 but my doctor says 28 🤷‍♀️

When does third trimester start?

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