Arthritis, or Fibromyalgia

I have been going to the dr for the past year for what appears to be fibromyalgia symptoms. The Dr says things like with Your Fibromyalgia. The Dr tested sedimentation rate, and it was normal. She lowered my cholesterol med dosage to see if that was the problem. I have severe arthritis, and am almost 2 years post full knee replacement. I have had arthoscopuc procedure done on other knee, and have arthritis in hands, and have had injections in shoulders and knee I am taking Diclofinac Sodium 75 mg, and I am taking Gabapentin 300mg 3x and Prosac (was on Celexa for Depression before change) for pain. The Gabapentin increase to 300 mg seems to have helped with the migraines, and I am not requiring Tramadol as often as before the increase, but I am still having multiple flares lasting sometimes a week or more, and take Arthritis strength Tylenol, as dr will not increase Tramadol dosage above the 50 mg I take. I have very few days where I am not exhausted, or hurting. Dr says next step will be pain management as she doesn't like refilling Tramadol. I took it upon myself to schedule an appt with Rheumatology dept at Emory University Hosp Midtown in Atlanta, That is where I had my knee replacement done. The appt is actually with an Osteopathic dr. My question is what will this Osteopathic dr be able to do for me (appt not for 2 month), and is it still possible that my problem could be Rheumatoid arthritis even though sedimentation rate is normal.