Colleen, if its any consolation at all, I too have trouble finding the right words when talking but I have no brain injury to blame it on (not that I remember anyway) ... for instance, when I'm about to mow the lawn, if I say it out loud I end up hoovering it ... I actually am a moron!
But seriously, that sounds awful - I get migraines so can empathise to a degree but I can't imagine triple-migraines. This might sound mad but have you tried wearing sunglasses? I have photo-chromatic lenses in my glasses now and that's made a big difference for me in terms of how often and how severe ... maybe worth a try to see if it brings any relief?
Finally, I get the pain thing and not being able to do stuff like exercising in the way you want - I haven't been able to exercise the majority of the year and my body feels it now - all down to a stupid injury of my knee. Finally, in the last couple of weeks I can now walk for a little while without pain and that is such a novelty. I daren't risk losing that so my exercise regime is very gentle. It sucks as far as the rest of me goes but I know it won't be forever. I too want my life back but I think patience is the key word.
Fingers crossed you won't be out of action for much longer.