Everytime i try to lay on my back i get a really bad pain in my bladder area and vagina. i'm 39 weeks. should i go to hospital?

CALL YOUR OB NOW: At this point all ?S like this should go to your ob, if u were my pt i would sned u to lbaor room to make sure everything is ok and u are not in labor or anything else strange going on a, most likely it is the head pushing on bladder and vagina, but if u are that uncomfortable i would induce you, ideal time to deliver for the baby is 39-40 wks, induction if done properly safe, easy and effective.