Flashbacks are torture all over again. You need a therapist who specializes in PTSD. This doesn't get better - YOU won't begin to heal without help. Don't slight the nurse, many doctors don't even fully understand PTSD, and many who do won't treat it because it's so frustrating and at time infuriating (if they let it.)

The rage within won't quench itself, but feed on all the negative thoughts and memories your depression can dredge up. I'm so sorry you are hurting.