My 8;year old daughter had an accident with her dad on a homade built scooter type thing, they like skid out on it, and her dad landed on her, and she said it knocked the breath out of her. She has a big goose egg on her forehead, and a couple of scratches. Ever since the accident, she has had diarrhea, and a head ache. I was wondering if this could be the results of a concussion, or just kind of a coincidence. Thank you very much for your time.