Thank you for your replies, everyone. I figured that I was not alone with these problems... not that I want any of you to have concentration and memory problems also! :( Obviously it gets worse as my sleep schedule gets weirder and weirder.
Ironically I am at work right now (my day job selling sporting goods w/ my dad) and someone asked me a question about... something.... a bat... maybe wow, I can't even remember that. And I found myself saying a garble of word salad about new and used policies that probably made little sense to her. I was like WTF AM I DOING. But I couldn't stop.
@Reclusive: I do a lot better with more work to do as well, but I still find myself sort of... "Disconnecting" I guess in the middle of working. For instance, I'll have 3 comic pages out in front of me to pencil. I will try to juggle them, but I find myself blanking out and staring off PAST my page as I am drawing and the pencil will be limp in my hands. I'll be contemplating something, usually about how drawing X or Y will be difficult. Then my mind will seriously just turn into a barrage of white noise, snippets of memories here and voices there. I can never remember specifics after. It makes no sense to me other than the possibility that I am trying to disconnect myself from the stressor (which in this case is drawing something difficult like a cityscape)
Recently I've been suffering with more anxiety related problems associated with this. I've been drowning in the feelings so much that I can't tell what's "from the PTSD" and what is just the rest of my screwed up head. Or well, maybe one in the same. I'm afraid to tell people, because the usual reaction is that PTSD is just an excuse to continue feeling bad so people will feel bad for me or pity me.