If you can find it, please take Essiac. It comes in tea or capsule form at the health food store. Essiac is also known as Four essence. It contains four herbs/roots that can treat cancer and shrink tumors. I take it to prevent cancer as my Dad died from a brain tumor. it might help with the pain and the cysts. One of the side effects of Essiac was that it helped my Fibromyalgia pain tremendously!
See a chiropractor, seriously, all your symptoms scream for chriopractic care, you probably have all kinds of misplaced vertebrae and if that is the case, you will not be helped by any MD. A good adjustment is worth its weight in gold.
Find one of those free clinics. The doctors there seem to know more than the ER doctors. You might have an infection left from having the surgery 5 years ago. One that stands out is P. aeruginosa. It can be taken care of with the right antibiotics. But you will need a good blood test.