Superficial damage symptoms and conditions

I was diagnosed with SLE (lupus) when I was 14, I'm 21 now, and I've had to be on prednisone all this while. The dosages alternate between 60mg (the highest) and 2.5mg (the lowest), I just went for a routine check up today and found out that my protein level in my urine is at an all time high. So the doctor is pushing me back up to 30mg of prednisone. Its 2 am, and I am sitting in bed crying because I don't want to have to go through everything again; the weight gain, the moon-face, everything. I know I may sound shallow, because ultimately, the medicine is keeping me alive, but the side effects are terrible. Very few people understand that its not fat that you're gaining, and the remarks that I know I am going to get are enough to drive me insane.Is there anyway the water retention or the weight gain can be stopped or decreased?