Has anyone else noticed Braxton Hicks contractions starting super early with their consecutive pregnancies? I think with #3 they started by the fifth month, but I'm just 12 weeks with #4 and I swear I've been having tightening in my uterus the last couple days. Should I be concerned? I don't have a doctors appointment for several weeks. Maybe it could just be from dehydration? I try to drink 8-10 glasses of water but don't always and I live in a very hot climate.