Hello, 5-6 months ago I was hit really hard during a football match. For a few seconds I might have been unconscious, however after that I felt a really big bump on my forehead. I applied ice almost instantly, and it became smaller, in the next few days there was a bruise, then the bruise went away, but now 5 to 6 months later there is still a small bump on my forehead which can be noticed sometimes. It does not move and it feels like it's hard. Do you have any advice to give me except surgery t