normal or should I get a second opinion?

I've been in an intense amount of pain in my lower back and pelvis since 32 weeks. Now I'm 35 weeks and it's getting to the point I can't move on my own. The pain keeps me up most of the night so I'm exhausted. I went to the hospital the other night because it felt like I was having contractions but mostly in my back, they gave me fluids and asked if I felt better and I said no but they just sent me home. My doctor isn't really doing anything about it so I've been considering going to a different hospital and see if they do anything differently.