Anyone getting Braxton hicks contractions already? For a week now my lower abdomen has been getting really tight for about 10 seconds and then going away. This happens a couple times a day. I originally thought it was baby moving, but read that's what BH feel like. Anyone else? I have an appointment with my doctor on Thursday for our anatomy scan. Should I be  concerned? First time mom and 20 weeks 2 days with baby girl!