Frequent Braxton Hicks

I’m 33 weeks 3 days right now and this afternoon/evening I’ve had frequent Braxton Hicks contractions, or at least that’s what I think they are. My tummy gets super tight and hard and very uncomfortable for a little bit before relaxing back out.

I’ve had these occasionally and infrequently before, but today I’ve had numerous episodes. I haven’t counted them, but I’m certain I’ve had several each hour. Is this normal or should I call L&D?