Ok i need some help!?

Im 37 weeks pregnant with baby # 2 and im having contractions every 5 Min's apart but they are not as strong as they were with my first son. Im in allot of pain im still 2 cm and 50% effaced. that's how i was how last tuesday. Iv been having bad back pain and im hurting. I might have lost my plug last night but im not sure. It feels like im being ripped apart. Im sick of going to the hospital and them not being able to do anything. This pain is new tho. What should i do. I have a Dr's. appointment to-marrow but i don't know if i can bare the pain. I tried laying down , taking a bath, walking it off, everything plz help.