13 weeks cramps

I am just over 13 weeks pregnant and woke up this morning with what felt like pressure or a constant cramp in my uterus. It doesn’t feel like period cramps but more like a pulled muscle.

It has been on and off but mostly constant and sometimes becoming a little more painful.

It isn’t round ligament pain, I had that with my son and it felt very different

Its hard to describe but it just feels like my uterus has a constant cramp or pressure.

Has anyone had this or have any advice?