I just came back from the doctor's and she doesn't know what's wrong. She couldn't see an infection, but that doesn't mean it's not there. I couldn't really open my mouth wide enough for her to have a good look, but she didn't think it was a tooth thing. Or I could have just done something while sleeping (like grind my teeth). She told me to ice it, take some Advil and wait. It'll either get better or it'll get worse.
So now I'm stuck eating a mushed banana for lunch.
*smooshes some more*