Braxton hicks

Lovemylife • Mom to two awesome girls. 1 MC. Had my rainbow baby boy 6/5/2017!!!! So in love 😍
I will be 17 weeks tom. For the last hour my stomach has been having what feels like contractions. My stomach gets super tight for about 30 seconds and then stops. This is my 3rd baby. I don't remember experiencing this so early on. Anyone know if this is normal for 17 weeks? Or should I call dr in the am?