Thanks everybody. I called my boss and I'm heading home. I usually don't like to take sick days becaue I'd rather take the day off when I'm feeling good, but this just isn't working.

I'll stop at the drug store and pick up some ginger ale to get me home, and see what else they might have.

The good news? I'll be able to make it home in about 1/2 hour because there's no traffic at this time of day! (My mother always taught me to look on the bright side of things.)

Thanks for all the suggestions!