Braxton Hicks?

Amanda

So, trying to figure out if what I'm experiencing is Braxton Hicks or something else. Every once in a while, my whole stomach will get tight. It doesn't hurt, but is a little uncomfortable. It usually happens when I've been standing for an extended period of time, or when I sit down while wearing my work pants (the waistband is snug). It usually lets up shortly after I switch position. Is this Braxton Hicks? I kinda thought BH would just present in the lower abdomen, as I've heard real contractions do. But if it's not BH, what is it?