Suggest Treatment For Unresolved Swelling And Numbness Of Index Finger

Hello doctor, I am 32 years old female.i am suffering from rheumatoid arthritis since 1 1/2 yrs.first my left index finger was swollen and unable to move, doctor can t diagnose arthritis at that time since my blood test like RA,CRP were negative and as a treatment injected me with a steriod and later my index finger was able to bend with reduction of swelling. same symptom occured in right index finger after 4 months, doctors then checked for anti-ccp test,that too was negative im my case. Then doctor followed same treatment with injecting steriod but that doesn t work. still my index finger is swollen and unable to bend.He suggested me to take SAAZ 500 mg twice a day. I have been taking SAAZ for more than 50 days but i find no effect,slowly my right elbow also started paining along with heels pain in right legs during walking. I am very tensed,whether my right index finger is undergoing permanent deformity. Plz help me out with probable conditions in my case. Thank You.