When does 3rd trimester start?

[m_r_p]

This app tells me I'm in the 3rd trimester at 26 weeks and 4 days. Other places say 27 weeks, or 28 weeks. I don't know what's right.

[karma20]

I just Googled it, some said 26 some said 27 but most the sites say 28. So yea I still don't know lol

[lkaykirk]

I was wondering the same thing. I turn 27 weeks on Thursday

[m_r_p]

Lol no one knows! I'll just say 26 weeks then ;) it makes it seem like less time left that way

[karma20]

Idk either, I was confused. I'm 26 +5 and it says the same. I asked my doc when it started.. he said a week or two and that was on the third so guess its 26 weeks.