My DS who is 6 fell off the climbing frame this afternoon, not from a great height but onto concrete at afterschool club .They iced it for him until I could pick him up about 2 hours later..When i picked him up he was grey-looking and very clingy.The area is still very swollen and purple He doesn't seem himself at all and is complaining of a head ache and is finding light and noise troublesome.Is it possible to get concussion from a bump to the face?