About 3 hours ago I was moving stuff around in my crawl space. Turning to reach for something I ran my whole left side of my head into the edge of a thick wooden beam. Needless to say it hurt like the dickens. I didnt see spots or blackout or anything like that and the left side still feels tender/swollen but doesnt hurt when i touch it. Im worried I might have a concussion or caused bleeding by the brain.