Yes, Scott, hope you're feeling much better by now.
Maybe it was "just" a virus. We had something making the rounds in the office a few weeks ago - caused crushing headache and vertigo. It was rough but it went away in a week or so. Well... mostly went away. A few people ended up with ringing in ear/hearing loss that hasn't gone away yet - but at least they're not walking like Weebles any more.