Dear L-jc~
It does not really matter what label you give it, you are in a bad place and need help. For what it's worth I have PTSD, plus other things, and your nightmares sound very familiar, though I had different reasons. I'm not a doctor so can only say what I have.
I really think you need to see your doctor and have not only the medication but therapy as well. See if you can be diagnosed. If it is PTSD them you will need therapy by someone used to dealing with it, maybe a psychologist or a psychiatrist with the right experience. See what your doctor says. That's the start.
There are many people who are like me and have not had confidence they can explain things clearly face to face. I'd suggest in that case writing it all down first and then booking a long appointment with your doctor. Use the paper to help make the doctor understand and ask to be tested to see if you have PTSD.
You sound rather alone. When feeling like this it really helps if there is someone you can talk to and say how you feel. Do you have any family or friend like that who will care and want to help? I found a family member (my wife in fact) and talking made a lot of difference.
To find out more about PTSD have a look in The Facts menu above which has plenty of information about Anxiety, PTSD and Depression, its causes, symptoms and treatments. Have a read before you see a doctor.
There are many here who like you have been unlucky enough to have been in an abusive relationship. If you browse around this Forum you will see how others have coped.
You sound in a tough situation, I do hope you feel welcome enough to come back and talk more.
Croix
