Turns out that I don't have a sinus or ear infection, after all. Upon returning from Iowa, my tooth erupted in intense pain. I believe this has been the ongoing source of my pain for over two weeks, and the airplane pressure must have been too much for it. On Thursday, my dentist performed a root canal, my first ever. He's not done, though, so I have to return next Thursday.
Meanwhile, I'm still in a bit of pain. But it's getting better. Unfortunately, in the days before my root canal, I took pain medication my dentist prescribed and it made me really, really sick -- as in vomiting, groggy, couldn't get out of bed and hearing voices sick. It sucks when you're in so much pain that you can't function, so you take pain medication to help you function and that only screws you up so bad that you can't function.
So now, I'm back to popping one Aleve, and making due, despite some discomfort whenever I eat or drink anything. Once again, this confirms my belief that drugs are really very scary. At least on my body they are.