Should I call the dr??

Kelsey
So I had my 37wk appointment Thursday, and I was a fingertip dialated and effaced some and cervix very soft. Today I believe I have been having contractions: feels like period cramps and uterus tightens up. A little while ago I went potty and had what I think was my mucus plug tinged with blood. I'm supposed to be having a csection on the 11th. Not sure if I should wait it out or call and go in to get checked out.