I think i have a small concussion and i have no money or insurance to go to the er?

Concussion : I recommend that you go to the emergency room for evaluation of the problem and to determine if you have had a concussion or if there is another problem. If you have a concussion then avoid contact sports or repeat trauma to the head because your brain is more susceptible to injury when it is healing from the initial blow.

Rest and wait: If you have no or only minor symptoms, you should rest and wait. symptoms may last for a week or more. If you are not developing more symptoms, going to the emergency room is not likely to be necessary.