I'm lucky I didn't break my neck (or spray the bathroom - ick). I layed back down for a while and got up feeling somewhat better. I'm probably going to call in sick tomorrow. I feel good enough to vegetate in front of the tv or computer, but that's about it. Physical activity is out of the question.
UPDATE: I think I know why I feel like shit. I took a leftover Doxyzosin pill, thinking it was an antibiotic. It's not; it's an alpha-blocker that I only took once or twice before and quit because it made me feel faint and nauseous. I'm such a dumbass. I still have a cough (and had a sore throat), so I succeeded in making matters worse. The doxazosin is going in the trash.