When do BHC start ?

mine started around 22weeks

I got my first one at 28 weeks

I read that they actually start at 6 weeks but u don't feel them til like halfway ish

^ true. I went in for an ultrasound at 11 weeks and was having Braxton Hicks I couldn't feel and had no idea about. But started feeling them around 20 or so

Mine started at 23 weeks

They start in the the second smooth but you can't felt them until your late second early third trimester.