Thanks for the advice Mark, I will be sure to continue to be careful with my movements to protect my head while I search for a solution. I understand that multiple concussions lead to increased sensitivity to movement but I also believe there is another cause of what I am feeling.

After doing some research I found a few videos on patients who had PCS for quite a while and had cranial adjustments done and become completely symptom free. After looking further into this, I read that if one of the 22 bones in the head are set off track through head trauma, they can lead to increased pressure and reduce blood and cerebrospinal fluid flow.

I then noticed that there is a noticeable dent on the top of my head where two of the major bones meet, also right where I get the weird feeling and where I most commonly feel my brain "vibrate".

Anyway just wanted to share that with you, I dont know if you have looked into that for yourself or have heard of it.