Yesterday, my son was sledding and was thrown off and hit the side of his head on some hard ice/snow. He s having a lot of pain--it hurts to eat so it seems the pain is in the joint where the jaw comes together. When I give him tylenol, he will then eat some soup, but that s about it. He also says his ear hurts and feels like it has water in it. Is this anything I need to be concerned about or does it just need to heal?