After booster:

Arm aches. Lymph node in armpit swollen. Throat scratchy. Head aches, possibly because I didn't eat or drink anything while sleeping all day. Eyes itch.

I'm also generally itchy all over, but that predates the shot.

Ugh.

Still better than covid, probably. I guess. (I have a hard time taking future potential misery seriously when my throat and arm hurt now. I'm aware this is a mistake in my thinking, thanks.)