His XRAY was normal and he was free to go with a special shoe. They thought maybe he had just gotten a bug bite (ummmm, because that happens so often in the middle of December when you spend the whole day inside???) but gave a prescription for antibiotics just in case.
Even with the shoe he wouldn't walk much yesterday. As of this morning it was even a little more red and swollen, so we started the antibiotics and will see if that makes a difference by tomorrow.