Anxious,

I've had three diagnosed concussions and have suffered from post-concussion syndrome for two and a half years now. I've had way more setbacks than I can remember, but I've never had symptoms that last more than 24 hours from anything other than a direct blow to the head.

I often used to have the same worries you do when I would brake hard in the car, or even when I would have a fit of coughing that involved moving my head rapidly. But, what I realized is that if I keep reminding myself that I've never gotten true symptoms from my head moving alone, it helps me manage anxiety, at least a little bit.