It seems I just can't get a break, every day some thing happens that worries me as to whether I made my condition worse.

My friend was driving me home and going about 50mph. She started braking as we were not gonna make the light. So we brake for about 3-4 seconds and then she lets the brake go and brakes again suddenly. Of course I was terrified. I didn't hit my head anywhere and I was holding onto the handle the whole time with my neck tilted forward but now I'm really worried that the sudden deacceleration might have given me another concussion. Ugh.