What if you dont have Braxton-Hicks contraction by 37 weeks?

Answer 1

Then you're lucky I suppose. Not every woman experiences them, and almost all women experience them differently when they do occur. Some aren't bothered by them in the slightest whereas others are in serious discomfort because of them. They can start as early as 16 weeks, or as late as right before labor. I'm in my 4th pregnancy now and have had them begin at different times (and with different frequencies and intensities) for every pregnancy. All I know is that when real labor finally began, there was no mistaking it for Braxton Hicks!