Check-up

I went to my doctor today & he had some bad news. Ive been taking Plaquenil since I was diagnosed last year & been taking Prednisone for the past couple of months. I admit I'm not very good at taking my pills. But my anti-DNA levels are way high & they're worried there might be something wrong with my kidneys. I've noticed my urine is a little bit foamy too & when I looked that up online it said that could be some damage to the kidneys. My doctor wants to start putting me on CellCept if the next round of blood tests don't look any better than the last. I am scared, my heart is already being affected with the pericarditis. It's a lot for me to take in right now & I dont really know how to feel about it. Am I supposed to be scared or is it nothing? I guess I will find out in a few weeks.