High school reunion symptoms and conditions

I had a kidney transplant a year and half ago, and had to take Prednisone as one of my post-transplant med's. I was on it for about 2 months and I went through a lot of the same side effects mentioned by other people, increased appetite and weight gain in odd places, sleeplessness, and acne. Then recently I had an allergic reaction to an antibiotic and was again prescribed prednisone for three weeks, but this time the acne is so bad it looks like a rash, and it's all over my back, chest, neck especially, and on my face. I can deal with it because I realize it's what I need to do, and I am grateful that there is a drug that can treat the symptoms from the allergy, but I am wondering how long it will take for the acne to clear up once I finish the 3 weeks? Does anyone know how long it takes when you've been on it for that amount of time? Any thoughts would be helpful. Thanks.
Megan

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.