Should I be ashmed?

I had a car accident several weeks ago and recovered from amnesia recently. Ever since my accident my grades have straitly plumeted in grades and studies and now I have noticed that I am highly more aggresive than usual. I cant control my anger and its begining to scare. To make things wierder I believe Iam begining to hallucinate. Any suggestions to any activities to help heal my mind? and what can help counter adhd?