When is enough truly enough?

32 weeks measuring 36

My doctor said unless my water breaks or im having hard consistent contractions for over two hours to not worry. But my oh my the cramps and back ache/pressure aren't giving up!!! It's getting worse!

I spent most of last night in tears contacting but not full belly contractions like he said it needs to be. My Lil man dropped Sunday and I was ok befor that. I was not told to take it easy or anything! Can this be so? Can what's happening change my cervix? Should I watch out for labor? Or am I just a big cry baby? I just want my little man to stay in and be healthy. This is baby #4 for me (getting fixed after this.