I don't think anxiety meds will stop these thought. they will just make the anxiety that these thoughts produce less extreme.

Maybe you need to practice some replacement thoughts. Some thoughts to shut down the anxiety though. Be critical of your thoughts.

An example:

"Oh no, did I just bump or almost bump my head ? "

Now, reject that thought "That is a dumb thing to think. If I had bumped my head, I would have felt it."

Or, " I need to slow down a bit "

I have lived with a brain that is super sensitive to IMPACTS, not bumps for decades. If I do impact me head, I acknowledge the impact. "Ouch, I need to be more careful" Then, if I notice any symptoms later, " OK, These symptoms will pass. Just give them time"

A good Cognitive Behavior Therapist who understand concussion issues can be a big help.

But, if we can't find that help, we can rehearse our own responses to shut down these escalating thoughts.

Adding anti-anxiety meds may just make things worse as they impact balance and thinking.