Try to drop the worry (and possibly guilt) you have from your son not telling you about his symptoms and the helmet to helmet hits. He probably wasn't aware enough of what was going on in order to realize what was going on until it was all over and it randomly occurred to him. It's pretty typical from all concussion victims to "keep going" through it. It's also just a part of the way we're socialized right now - although I'm hopeful that society is changing when it comes to concussions, unfortunately due in part, to the sacrifice of players like Junior Seau.

Also, you're not a coach who should be trained to recognize the signs of concussion. So, I tend to agree with Mark that your son should have been pulled from the game.

It sounds like your son needs cognitive rest. Which means he should not be asking his brain to do stuff it's having trouble doing, like homework and schoolwork. If the TV overwhelms him and causes him to have symptoms like dizziness, headaches or a decline in cognitive functioning then it should be avoided. Typically, people recovering from concussion can be easily over stimulated and it's best to avoid the sources of the stimulation that will overwhelm their brains in an effort to allow them to rest so they can heal. Healing brains have a lot of trouble filtering noise and other stimulus that a normal brain doesn't even consciously recognize that it's filtering out. So, restaurants and other noisy or active places might just be too much for him to handle - and one of the problems with it is that he might not even recognize what he's having trouble with. A recovering brain has trouble analyzing itself. It's having trouble doing a lot of things it could do before the injury! So try to be as patient as possible. It might be difficult for your son to analyze and/or communicate what's going on with him as a result of it too.