Hello! Yes, I tend to get nightmares whenever I go through patches of stress and anxiety, they're nearly always connected to whatever it is I'm worrying about at the time... Negative feelings and thoughts are invariably the cause. For example, since watching 'Paranormal Activity' a month or so ago, I've had trouble falling asleep... Not that I believe in ghosts/demons etc, I just don't *disbelieve* in them, so the thoughts play on my mind and keep me awake and have been the main fuel for recent nightmares, which have been triggered by my anxiety. Although last night's nightmare brought in many different fears and worries, so it was particularly bad. I just tend to go through patches, so it'll be okay again soon.
