Period like cramping

Mags

So I’m 37 weeks today and have been having what I think is prodromal labor since Sunday. About an hour and a half ago I started having period like cramping on the lower left hand side of my abdomen. I also have pooped a lot and am having the urge to try to poop more (sorry for the tmi). Anyone else experience this? I have an appointment in 4 hours but this is miserable. I took Tylenol and it’s done nothing.