Period-like cramps, tightening stomach, 29 weeks?

S
Friday I had some cramping at work with the tightening stomach. I can't have my phone out so I couldn't time them but I think I had like 5-6 of them in 3 hours. Today I cleaned my entire apartment and began getting cramps with a tightening stomach. I don't know if this is braxton hicks or whatever but it's very uncomfortable and sometimes painful. I have an appointment Monday, so definitely bring this up but just wondering what you guys think this is?