Period type cramps at 30 weeks?

I'm 30 weeks high risk due to blood pressure being high and possibly preeclampsia (waiting for blood work to come back) and I've been up feeling period type cramps in my lower stomach and back all night into this morning. Usually I can tell the difference when it's Braxton hicks cause it stops shortly after and isn't this intense. I go to my OB Wednesday. But what should I do in the meantime? Should I just wait it out? Or is this normal?