Period Like Cramps just shy of 31 Weeks?

Hi there. Wanting to get some opinions about some cramps I’ve been dealing with since waking up this morning. It feels like my typical period cramps. The ones that cause like a burning pain in the uterus. It started in front, moved to the back, and the feeling has been lingering for about an hour and a half. I tried laying in all different positions but eventually had to get up with my 2 year old. They’ve gone back and forth between dull and stronger but haven’t exactly stopped completely. This is my second third trimester reaching pregnancy and I’ve never dealt with this before so I’m not sure if this is something I should call about. My doctors office I closed so I’d have to contact on call and they usually tell me to just go to the hospital. I’m 30 weeks and 5 days.