Hey Toby -
Hang in there. Just so you know, I am a proud, card-carrying member of the "Knights and Ladies of the Round Chihuahua Table"...duly appointed by my dear husband, who said one day that I reminded him of a little tiny Chihuahua dog that bites at the ankles of someone who has royally teed it off, then latches on and doesn't let go until it gets what it wants. (Trust me, he meant this as a compliment!) Can you visualize this?
Therefore, on this day, I take great pleasure in formally dubbing you "Sir Chihuahua Toby." Go forth, bark loudly, growl, and bite with honor. Don't let go of those docs' ankles until you get the help you need. Warn them, Lady Pearl Chihuahua is coming across the pond if they don't watch out, and tell them you've heard I have a ferocious bark and bite.
Feel better soon.