In reply to The Ice Doctor:
I agree with the others that you need to have the conversation in part at least with your doctor and then with those work in the specialties.
I think that consistency of exercise is a big factor. If you do little and then suddenly do a whole 2-3 days of exercising like mad, then your joints will suffer. You need to keep your muscles in good form as they actually can protect your joints.
Don't smoke as smoking actually makes Rheumatoid arthritis far worse(not that you have that diagnosis yet).