I hit the back of my head yesterday really hard I got dizzy fell back and hit the back of my head there isn't a lump or bump but it is extremely soar to the touch and extremely painful, I get dizzy when I get up and feel like everything is far off. the area where I hit my head feels like water is running down it when it first happened I thought maybe it was bleeding but it wasn't does anyone know what can be going on with my head injury