Under the Weather

I'm "under the weather" (what does that phrase mean, anyway, aren't we always under the weather, technically?) today. It happens every year. Saturday I had a slightly scratchy throat. Yesterday the throat was a little worse and I was very low energy. Today - extremely low energy, scratchy throat, kinda congested, possible slight fever. All symptoms vague enough to completely baffle me as to what kind of medication to take. And certainly not bad enough to keep me home. But annoying enough to make me not want to be at work :(