Imuran and prednisone

Shortness of breath has continued to worsen as its built up in my system. Chest pain and back pain on my left side seem to be worsening as well. I started Imuran as opposed to using Prednisone which is much harsher on your internal organs, but I am hard pressed to think anything could be worse then what I feel now. I have not lost my appetite, but the fatigue is unbearable even after I've eaten.

I've been taking 100mg of Imuran (with Prednisone and Asacol) for just over a month and am experiencing severe headaches, hair loss, back/joint pain and nausea.