Thanks everyone for your replies.

innocent - I've tried grounding before, and I'm either not doing it right, or it isn't helping. I do appreciate the suggestion though. Is it possible that it would just not work? Or is it more likely that I just need to practice it more?

I'm not sure how I could increase my stress levels as they're already pretty high, and it seems like anything additional sets off something going on (triggered, flashback, dissociate, etc).

I can definitely try to bring it up with my therapist or psychiatrist though, as I see both of them within the next week.

amanda - I know what the definitions of both are. What I mean is that I will get triggered and then start having flashbacks (fully reliving the stuff), and then at some point, there's just... nothing. And my friends have said that when that happens, I am completely unaware of anything, I can't comprehend anything, I just shut down, and then I have no recollection of anything. Which is basically what you've said is dissociation. I've brought it up to my psychiatrist and he has said that I am dissociating because of the flashbacks and PTSD. I've just not been given any ideas on how to help with it, thus asking here.

innocent (again lol :P) - Thank you for explaining that so well, I don't think I'd have been able to do it that well.