Swelling on R-hand side below ribs, by my back. Very painful to touch. Also swelling on my knee & hip. Could this be RA, or something else??

Rheumatoid arthritis. usually affects small joints first, such as fingers, toes, wrist, foot and ankle. Lower rib and back pain could be kidney, gyn, or gi problem. Knee and hip swelling could be DVT. You should consult with your doctor for accurate diagnosis and proper treatment.