Joint and Tendon pain after Chemo and while on Herceptin

I had docetaxel, cyclophosphamide (finished February) and am still having herceptin. Also had radiation. Joint pain in hands, feet, knees and shoulders definitely worse since starting chemo to the point of affecting quality of life. Am now on Norspan patches 10mg and panadol osteo. Starting a cancer rehabilitation class on Wednesday at the physio clinic twice a week which will hopefully help with pain.