Early labor signs?

Lauren • Baby boy Nate born 10-07-17

So I'll be 35 weeks tomorrow and I think I've been having some early labor signs. My ob didn't really say anything when I told her, just to stay hydrated. The past 3 days I've been having some contractions, none of them frequent enough to time them though. Diarrhea. Belly dropped yesterday. And I've started losing little bits of my mucus plug. Any thoughts?