So I woke up this morning, hungover as shit- and my uvula (you perverts! It's the thing in between your tonsils!) was swollen and it hurt. It got smaller throughout the day- but now it's bothering me again.
I think I must be dehydrated or something like that.
It sounds like I might have a case of uvulitis, which can be caused by dehydration.

It's totally creepy, because it's so swollen that it touches my tongue. I keep thinking I've got something in the back of my throat.