Rheumatoid arthritis. Swelling and pain?

Hello doctor , i was diagnosed with rheumatoid arthritis when i was just 16. Then doctors gave steroids at that time and i was like able to walk and do my regular job. In the mean time some problems occurred and my family physician prescribed me Naproxen and Paracetamol (Naprosyn P) tablets for light pain control.. now a days i am feeling swelling on my ankles , pain on my wrist elbow heel bone and ankles. Every morning i wake up with so much heel pain that i can not walk properly. The medicine i mentioned is unavailable at market . I also have beta thalassemia minor for that i am having folic acid in a regular base. Please can u suggest a medicine with same composition and what should i do to avoid those swelling and pain? Thank you.