Suggest Treatment For Pain In Lower Back, Hips, Neck And Shoulders

I have chronic pain in my lower back and hips, and in my neck and shoulders.. my doctor has prescribed anti-inflamitories, muscle relaxers and several different pain meds( each new pain med increases in strength). I have also had X-rays and have been to an orthopedic specialist.. Nothing helps.. I've tried ice packs and heating pads, massages ,a chiropractor, and exercise. Its like literally, the more I move, the more pain I'm in.. Some days I cant even walk.. What is my next step? What else should I try?