Are you participating in your recovery by accepting the facts that these movements are not causing injury?

A car cannot stop and cause more than 1.6 Gs of deceleration. If it stopped an maximum braking, you would need to smack your head into the dashboard or something solid with a serious force.

It takes 20 Gs to be a subconcussive impact. 60 Gs for a concussion.

You need to drill and review these facts and repeat them out loud so you hear them.