I had pneumonia when I was in high school. I don't remember everything, but I was out of school for nearly a month, I think. I had to sleep propped up on pillows so I was almost sitting up or else I'd cough nonstop. Whatever medication I was on made me feel sick and I lost weight. The thing I really remember is that at some point, I was so weak I needed two hands to sqeeze the toothpaste -- it was awful. Then I had an inhaler for a while because I kept wheezing.
Oh man that's probably not helpful, but I did get over it and I've never had it again, so that's good.
Feel better!!