Which ... my mom says is really silly of me.
Basically we were going down the stairs of our basement to get to the garage. The light wasn't on and so as I was walking slowly down the steps (I have to be careful because the steps are really small) I accidentally hit my head against the concrete above. I hit right on the edge of my forehead (not exactly the side of my head... but not a directly on the forehead.) I don't think I hit very hard because even though I sat down afterwards (mostly because I was like '...wow I seriously just hit my head on THAT?) It wasn't a hard hit, my head made a clunking sound against the concrete, but the hit didn't make me stumble or fall over. It didn't hurt when I hit it, and it didn't hurt afterwards, my mother checked it out and said my head wasn't swelling, red, and she didn't see or feel any bumps. I've heard stories on the news of people feeling fine and than later dying of internal bleeding and it's made me nervous (which is a terrible thing because of course... anxiety can cause symptoms too!)