I've been diagnosed with adult stills disease, i've been on celabrex, naproxen, predisone n now sulindac, noneofthese relieve pain, wut should i take next?

Several good options: Adult still's will often require more powerful drugs than nsaids (several of which you list here). Fortunately, many of these drugs are quite safe, and are almost certainly less worrisome than steroids (like prednisone). Methotrexate and tnf inhibitors might be considered. These widely-used rheumatologic drugs are often quite effective and are usually well tolerated.

Adult Still Disease: Adult still's disease is notable for high fevers, rash, joint swelling and pain. If pain is the prime symptom especially with swelling and tenderness, then emphasis should be on prevening joint damage as well as pain. Methotrexate alone or in combination with a biological medication such as antitnf or IV tocilizumabin are often effective.