Drinking after minor concussion?

I had a soccer game and got hit in the head and now have been dizzy ever since. I believe I might had a minor concussion. 1-2 days after this injury I decided out of stupidity to get drunk out of pure pressure from my friends. I am very scared because now it has been 6 days and i still am dizzy, and I think i might have cause much damage from drinking with the injury. My main question is will i have brain damage for life and not be able to do anything with my life? (PS I am extremely scared about this.)