My son has speech problems so he can't really tell me how it happened all I know is that he had a bump on top of his head and his knees hurt, I took him to Dr. but he said he was fine without running an MRI on him or getting xray of knees, the bus driver said he was gonna make a report but I never heard of it and they also didn't call me to tell me about the incident, it happened like three days ago, what can I do