NEED OPINION! What could this be ?

Julia

I’m 37 weeks 5days. What could this be ? I’m assuming some of my mucus plug ? I’ve been having a lot of period cramp pains in my lower back and stomach but nothing too much to handle. I don’t wanna stress out my boyfriend or parents about it so I thought I’d ask other mommas first . Should I wait or call my OB or L&D?

Pics so it doesn’t get lost