So, it turns out that my little cold is actually a fever, sinus infection, and bronchial infection, all rolled into one miserable package.  Whilst I sat there in his office hacking up a lung, the doctor—leaning closer to my face—said, "Right now, you might be contagious."  He also said I should rest and take it easy, and be O.K. to go back to school on Monday.  I'm to take an antibiotic pill the size of a grub twice a day, for the next 10 days, and I have an inhaler–to be used either every 6 hours, or as needed.