How did you get that many health problems diagnosed? Doctors tell you it was one disorder and then another?
Autoimmune disease causes muscle pain so a fibromyalgia diagnosis in the presence of Lupus or RA is unnecessary. Osteoarthritis is not due to autoimmune disease and your arthritis would be due to Lupus or RA. Your likely either going to have Lupus or RA, I'd be telling my doctor they need to get their facts straight.
Your on oxy. That's a strong pain pill. Narcotics only last for so long and pain rebounds. Doctors here rarely prescribe such. You can't even get lortab now for a tooth abbcess. Ultram, and that doesn't do anything.
There are other corticosteriods. I like Toradol injections for pain relief but in the case of renal problems or Lupus, you likely can forget that.