Your Vestibular Therapist and Speech Therapist should be able to provide documentation of your condition. Don't use any NUCCA reports. They will backfire.

The doctor needs to explain that a negative MRI and blood work does not mean you are not injured and disabled. They are just done to rule out other issues.

Have you tried to return to work ?

Have you kept a journal to document your head aches and attempts to resolve them with meds ?

What is Propelnon ?

Did you mean propranolol ? That is a BP med. What has your BP been ? That is a good indicator of injury.