I'm 37 weeks and for the past few days I have bee getting bad pains in my inner tigh's and back, extreme pains in my lower belly. They go from one side to the other. I try to switch positions and they just get more intense. They last a good minute or 2. When I went to the doctor Tuesday, I was 3cm. She didn't tell me how efaced I was though. My question here is, is this labor coming on? I been losing my mucus plug for some days now too.