Sorry, I forgot to ask if you'd seen a rheumatology for a proper diagnosis. Are you talking about osteo-arthritis or rheumatoid arthritis? They are two very different animals.
There are many, many medications available to treat not only the pain and inflammation, but also slow down and hopefully halt the progression of the disease itself. The frustrating part is finding the right medication or combination of meds for you - no two people respond the same way to the same medications.
My "cocktail" is Enbrel and methotrexate, plus an anti-inflammatory called meloxicam (Mobic). These three meds only scratch the surface of what's available. Good luck!