I have severe degenerative joint disease in my left knee. For the past 2 months my knee has been very swollen and extremely painful. I have been waiting a month for the appt. for the dr that did the last 3 surgeries on this knee. This knee is so swollen and painful, I can't sleep or get any relief. I have tried cold compress, moist heat, bio-freeze, Norco and Tramadol. Nothing is working? Is there something else I can do? Should I just go to ER?