The MRI finding definitely explain some of your symptoms. Numbness in arms, hands, fingers. Hip and leg pain as well as headaches. I'm not sure about the other problems you mention. Your C6-7 sounds a lot like mine. I am having surgery in a few days. My NS said all the PT in the world wouldn't help my problem. Your C4-5 doesn't sound too great either. Have you been referred to a neurosurgeon? Good Luck!