H.L.
I agree with Danielle. Also your doctor wouldn't have prescribed it if you didn't need it. They don't like giving people steroids. My daughter gets it at the beginning of every winter to help her lungs. Her only side affect is she wants to puke from the taste, and she gets pretty hyper. She has never complained of joint aches or anything else hurting. My guess is they are missing something that is wrong with you. The steroids might be amplifying the issues, but they were there before the prednisone was. The pains are your body's way of saying "get me checked out" Have you been tested for arthritis or bursitis?
Just wanted to add, bursitis is traditionally a disease that affects the older generation, but I am only 30 and have had it for approx 7 years now...so it's not out of the question.