My son and I were trying to get to our vechical on a freezing rain day. Not knowing how bad it really was. He tried to help me get to our car by holding on to me. Well needless to say we both went down and bump heads really badly. My forehead and his temple instantly swelled. Both of us got instant headaches him more than me because he also hit the back of his head. After 3 days alls I have is a little swollen still with a black eye. My son is who i am really concerned of for the following reasons 1: he couldn't sleep the first night because he had a headache, 2: nows he justs wants to sleep. I offer to take him to the emergency room but unfortuately he wouldn't go. Do you think this will past or should I be concern?