Thanks for the well wishes!

Thanks for everyone's concern. I feel better now. It was a dizzy spell as the_gneech said, and I was afraid it was a side effect of a short-term prescription I just started taking this morning. I called the doctor's office; they said that shouldn't be it. So I lay down, with John occasionally bringing me stuff (water, the afghan that mamallamadevil crocheted for us, etc.) and woke up about 90 minutes later feeling a lot better.

Summer sometimes does this to me, so that could be the problem. Even if I'm in air conditioning, summer still affects me, just nowhere near as bad. I guess I'll know if it's the medicine if the same thing happens tomorrow!

Edit: I've also been having a very stressful time at work lately and some symptoms of anxiety, so that may have had something to do with it as well. Vacation come to me now!