complications

Kaitlin
I'm 27 weeks and lost what I think was part of my mucus plug yesterday and again today. I've been having mild menstral like cramps off and on for a couple days too. Any advise? I see my doctor on Tuesday. Should I call or go to labor and delivery to be checked?
I'm on progesterone because I have a history of preterm labor with my first baby. I thought the progesterone would prevent anything like this from happening.