alternative medicine brain injury - concussion

I am looking for alternatives for pain and discomfort following a concussion that is associated with tramatic brain injury. TBI  Undiagnosed.  I have been in pain for more than two years.  Headache, headpain, head pressure, migraine, exhaustion and neck pain.  I also have confusion, memory issues and trouble managing day to day life.

Especially focusing on work.  

I do not take perscription drugs.  I do need to be better able to manage the pain.  I want to get back to exercise
and my life.  Looking for good pain management class and low impact exercise.