This is a weird one.
Thursday afternoon, I noticed I had a bump on my head, behind my left ear. It's not far from the base of my skull, but very much on one side. I do not remember bumping my head here, and it's a weird place to bump your head.
Thursday night, at bedtime, it hurt. Hard to lie down. So I don't think I had it on Wednesday.
Friday morning it was smaller, and hurt less, and I thought, ok, I must have bumped it.
Friday night it was big again, maybe bigger than Thursday night, and it really bloody hurt, even when I wasn't lying on it.
This morning it's smaller again, but still hurting. WTF?
It feels like bone, not like a boil or anything. DH had a look at it, through my hair, on Thursday, and said it didn't seem red or anything. It's a bit tender.