Anyway, the doctor confirmed the infection. I was definitely bitten by something and have developed cellulitis. I had to get a tetanus shot and I'm now on two antibiotics. They also drew around it so I can monitor it over the next few days. If I develop a fever or it gets worse in the next couple days, I have to go to the ER so I can get IV antibiotics. Fingers crossed I don't have to.
At least it doesn't hurt. The two shots I got hurt a lot more.