I know when I didn't have insurance, I was able to find a pro-bono counselling center which hooked me up with a therapist. Perhaps there's something like that in your area? Beyond that, have you considered applying for disability on mental grounds? Not sure what it takes to qualify, but it's worth a shot and something's better than nothing. Also, I've no experience in this area but what about the VA? Surely there's at least something you can apply for to get help, what with your PTSD and all.
Sorry I can't offer anything better than that, but I hope it helps somewhat. Best of luck and keep us in the loop.
The purpose of life is to make it mean something.