I feel so crap!

I'm 36 weeks, 4 days. I went for my weekly OB appt and everything, medically, is fine. Doc said, anytime from now, if you go into labour, we're not concerned. I AM! It's too early. Well, I guess my belly took that as a green light to come. She has been so active (more then usual) all afternoon, I'm feeling nausea, lower back and head is killing me.