My roommate infected me with some kind of virus that he had (actually still has it) and I got over it in one day. He, on the other hand, went out with his friends, drank insanely, stayed out all night, and consequently got sicker and sicker. Now, he's left for a few days to recover at home. I was wondering, since he got so sick (he was ill for over eight days, was coughing, vomiting, etc.), is it possible that he may have contracted mono, or even pneumonia? And if it is, should I be concerned for myself?