Earlier today I slammed my head into the corner of a metal locker. I was sitting on the floor and went to stand, and considering that I was angry about a situation I stood up a lot quicker than I normally would. The pain itself left me on the floor for a good 5 minutes rubbing the injured area, but I was otherwise fine at first, but a few hours after and up to right now I am nauseated, have a mild headache, and mild blurring in the eye opposite the side I hit, and fatigue. This is rather alarming, I've hit my head here and there, typical bumps everyone has, but never had the post-injury symptoms. Is this something to be really worried about?