Sarcoidosis, how do I stop the pain?

The pain alone is problematic.  I would like to do a lot of things in my young life, but living with Sarcoidosis limits my activities.  I tried today to exercise a little bit with my elder children. I even purchased on of those "Bean" pillow products so that I wouldn’t cause any stress on my joints.  Just doing the leg exercises caused my hips and legs to hurt.  I have to do something to get this weight down brought on by my increase in Prednisone again.  Every time it seems as if my weight is getting back under control, my sarcoid flares up and my prednisone (steriods) are increased to higher dosages.  There has to be another way to fight this dis-ease.  I am tired of feeling like an 80 year-old arthritic patient.