I'm no Dr. but it sounds like post traumatic stress syndrome. People who have been through really bad experiences like the one you describe have it.
I think a psychologist or psychiatrist can help you. There are support groups for this problem. There should be some phone numbers you can call for more information.
Try to talk to someone. Many people with this syndrome have been helped .
There's a forum for it also. There will be a lot if information for you.
I hope you will feel better soon. Do something for yourself quickly. You need help.