I get that at times, the sense that something horrible will happen...I don't know what it is or when but in my mind it will happen. I can certainly relate to having rather vivid dreams, waking up, going back to sleep, tossing and turning and then waking up feeling like I got no rest whatsoever.

Not sure what to do about that, aside from try to manage anxious feelings...but I can certainly sort of relate to those experiences.