Help plz

Emily

Serious question/advice needed. How do you know if it’s contractions?? A couple hours ago my left hip started hurting so I took a bath and it’s progressed to my whole lower back hurting really bad and now I’m getting like “waves” of pain across my lower stomach and I took a Tylenol so I’m hoping that helps. It snowed 5 inches here in Oklahoma and my ob and hospital I’ll deliver at are an hour away and I don’t want to risk that drive for nothing. I’m 32 weeks today