Quoting Miranda Reisenauer:" I've had the braxton hicks before, and I'm pretty positive these weren't them. My stomach really didn't ... [snip!] ... I really thought that it was the real deal because they were coming about every three minutes, but just like that they stopped."
i'd wait it out and just see if they come back again and if they are, time them. or if your water breaks, obviously go in. my water never broke though. i guess they broke it when i was in labor or something. i don't remember.