PredniSONE and gastrointerologist

For optic neuritis, and arm and shoulder pain: I had a combo of 3 days of Solu-Medrol infusion (steroid via IV) and then went on the following regimen of Prednisone: 5 days 60 mg; 3 days 40 mg; 2 days 20 mg.
Side effects have been terrible with the WORSE CASE OF FACIAL ACNE I have ever had. I'm 28 - I have my 10th high school reunion, weddings, and more -- and it may sound vain, but if you saw this acne (hundreds of tiny pimples all over my cheeks; sides; chin; and upper neck) you'd feel my pain. Also, got shoulder, arm, back, and chest acne -- which I can take b/c I can find ways to cover that up. But face! It's terrible. I'm using Pro-Activ and see minimal improvement. The #2 problem has been SEVERE heartburn during the tapering off phase. I have never felt that much pain and it only went away after I completely went off the drug - I treated this with ginger drink (a hot tea sold in international food stores) and Pepcid AC. Also, due to my original symptoms I can do virtually no exercise when I used to exercise 6 days/week. I'm really worried about weight gain which I already see in my arms and face. My appetite has been through the roof. Irritability was the worst but I forewarned my family. My original symptoms have greatly improved, but I'd honestly rather fight through that original pain than endure the craziness that is prednisone.