That's a lot of steroids... you should be feeling much, much better in a few days. Be sure you take all the pills tho and don't stop just because you feel better. An infection can flare back up so finish your prescription out. Also, drink tons of water. Just keep drinking!
Sounds as if your immunities could use a boost, too. Dark leafy greens are loaded with immunity strengthening B vitamins. I start cooking and eating chopped turnip greens cooked in chicken broth at the first sign of any kind of cold or whatever... it's amazing how fast I recover. Just a reminder: Sugar depletes your immune system. And milk is loaded with lactose sugar.