I had bronchitis last winter. I got a shot in the hinny, put on antibiotics for 10 days, and was told to spend as much time in bed as possible. I had finals that week, so sleeping was out of the question. It took almost a month before I felt completely well.
I remember it really hurt to breathe, and my lungs sounded like crumpled cellophane every time I drew a breath. Lots of coughing and lightheadness too. No one else I knew had it, so mine didn't seem to be contagious. The next month I caught the flu though; it was a looong winter.