So confused.. when does third trimester begin?

kaitlinforrest

Ok... so don't make fun.  I really am confused!  Some places I read it begins at 27 weeks, some I read it begins at 28 weeks.  Also, does 27 weeks begin the 7th month if you are going by conception and not LMP?  I don't like to go off of 10 months, I like to go off of 9 months.  But I don't know how far along I am.  Pregnancy can be confusing!

SummerFall03

https://www.thebump.com/a/how-long-is-each-trimester

UTHorn

I've been told by my midwife 28 weeks.

cMichelle0423

28 weeks.

Gingermom15

Were the answers on D15 not believable? Lol