KC,

Did you fall to the ground when you tackled your friend ? Could you have injured your neck ? It can cause some of your symptoms. Your posts leave me confused. Have you used any drugs ?

The many imagings you have had eliminate any serious damage. It is rare for a concussion to show on any imaging.

From what you have posted, it does not sound to me like you have suffered a concussion. As I said, more likely a neck injury.

How is your sleep each night ? Are you continuing to drink ?