So I was sitting at my desk, and all the sudden my entire stomach kind of tensed up for a second... like a muscle crap, not so much a menstral cramp... It lasted for just a second or two and then went away... It's happened a couple times since... but never for more than just a second... but it gets tight all the way up my stomach toward my ribs... Also I was kind of slouched at my desk, so I leaned back and stretched out a little, and it went away immediately... Does that sound like BH contractions? Just curious... never felt it before but I'm thinking maybe that's what it was?