Did you keep talking to the Psychologist after he put you on drugs? If not, it's not going to do you any good.
Look for a Psychiatrist, if you can afford one or can work out a way to have insurance pay for it. If not, try another Psychologist who will actually try to help you instead of throwing pills at you.
Many people suffer from what you're describing, and there are ways to make it better. It sounds like most of your trauma is related to a single incident, which makes it "easy" for a Psychiatrist to work with. At least you have a good idea what triggered the condition.
