The Illness Dilemma

I'm sick. This is a problem for all the normal reasons--it feels like there's a little gnome with a pick axe in my ear, I think really slowly, and any activity other than sitting on the couch watching reruns of The Office is a strain. But I have this job, see? And I'm always conflicted about what to do about work when I'm sick. I usually have to be on the reference desk for at least a couple of hours every day and most weeks I have meetings to attend or events to host, so I can't stay home without inconveniencing co-workers. But if I come to work sick, I'll infect other people and that's inconvenient for them, too. Fortunately, yesterday I only had to work long enough to attend a meeting stating my preference that administration remain unaware of the filth and smut I buy for the teen collection. I'm the weekend supervisor, though, so I have two more days of work this week. What to do, what to do?