Hi, Yesterday at school, I was sitting on the back rest of a chair thinking that there was a desk behind it and fell off, hitting my head off of the metal marker tray on the white board on the way down. I did not black out, nor did I lose memory. Today, however, I had a headache all day until around 1:00PM where it went away and then came back at around 6:30PM. I now have a metallic taste in my mouth. My head hurts when I touch where I hit, but the headaches are not there. They feel like they are on top of my head and it feels like there is pressure on it. Would you mind helping me with this?