I had similar issue with yawning, I couldnt yawn for about a week right after my whiplash.

My advice - stop trying to control everything, just let it go.
You need to teach your mind to ignore false alerts, and recalibrate your senses, ignore the pain and accept it,
learn to live with it and it will eventually go away

Anxiety and stress wont let you heal because they will over excite your neurons and wont let your sensitization heal.
Chronic pain and concussion/whiplash can make you develop sensitization,
simply ask yourself had the symptoms changed during the time since the injury?