How much cramping is normal?

KP

I’m almost 33 weeks and have been having Braxton hicks regularly. Today I’ve started having some back pain that feels like period cramps, and some low stomach pain along with my Braxton hicks. They don’t feel like contractions as they can’t be timed etc, but the back pain is period like and pretty uncomfortable. I don’t remember this when my first.

Also, my Braxton hicks used to be painless but now they feel like period cramps low down when they happen.

Normal? Concerning? Anyone had a similar experience?