i was going to bring up a point about accepting money from the other guy's insurance company when i remembered that, in this case, there isn't one. BUT, it will be of use to other's, so here goes...
a while back when a guy rear-ended my car, my agent told me NOT to accept any cash for medical expenses from the other company. she told me that my insurance would cover those bills and that in most cases, some injuries don't present themselves right away. when you accept a payout from the other insurance company, you release them from future claims, so if something were to come up, you would be SOL. however, since my insurance company was taking care of the medical side, i didn't have to worry about time limits; they would go after the other insurance company for reimbursement.
glad to hear you're at least OK.