Weird stomach issues

I'm 38 + 4. Baby #2. Dilated to a 2 and 50% this past Wednesday. My stomach has been giving major #2 issues. I'm hoping this is a sign. Lots of pressure. I've lost pieces of my mucus plug for a week now. I was putting my son to sleep and out of nowhere I had to run to the bathroom. It was awful. I've been getting a lot of Braxton Hicks and some inconsistent contractions at night, but nothing serious.