I am 28 weeks and honestly can't tell when or if I'm even experiencing Braxton hicks. When I was…

I am 28 weeks and honestly can't tell when or if I'm even experiencing Braxton hicks. When I was pregnant with my first I didn't notice them at all. Last night I was experiencing a lot of discomfort around my belly, it was really tight and felt almost like a cramp. Walking around wasn't helping at all. Eventually I just layed down and tried to sleep and woke up just fine this morning. My question is, was that a Braxton hicks or something else?