V.B.
I'm at the same place as you in my pregnancy - 37 weeks (but no dilation or effacement yet). I think it might be lightening (baby descending into the pelvis). I've been having Braxton Hicks since after 32 weeks, but they've been becoming tighter and more intense even though they don't hurt. But as long as they don't hurt, I don't think they're labor contractions.