Hey M. Glad to hear you're slowly getting better. I'm not surprised about the concussions. I used to do an acupuncture treatment (when I was in Canada) for fatigue etc resulting from side inpact collisions. The treatment was called an energetic vital alignment and seemed to work really well for about half of the people I tried it on... You might want to think about an acupuncture.
Please keep coming with the updates.
Living life like there's no tomorrow.
http://gorgebikefitter.com/
2007 Look Dura Ace
2010 Custom Tonic cross with discs, SRAM
2012 Moots YBB 2 x 10 Shimano XTR
2014 Soma B-Side SS