2nd mild concussion in 3 months. what happens to the brain after a 2nd concussion and when they are so close together? scared i won't be the same!

Concussion: Post concussion syndrome consists of headaches, dizziness, some visual disturbances, occasional nausea. These symptoms may persist for weeks. If you have significant concerns, consult a neurologist for evaluation especially where you have had two head injuries in a relatively short time. However I would expect a complete recovery with no lasting problems in your case.

Still symptomatic?: If you are still symptomatic I recommend rest, both physical and cognitive until symptoms subside. If you are no longer symptomatic do not worry. The brain has cerebral reserve which can accommodate. Remember concussions can be cumulative. Avoid the activities that have caused your head injuries