Beginning of labor?

I’m currently just over 37 weeks with my first. Went and had my cervix checked yesterday, only 1 cm dilated but lost some of my mucus plug last night and more this morning. Now I’ve been having lightning crotch all day. I’ve had it a few times prior but less intense. Today the jolts are much more intense...labor soon? No painful contractions or anything, just some tightening...