I also have trouble sleeping at night. I am up every night until at least 4am, even though i usually have to get up at 7am. I've gotten to the point where I think its great if I get 4-5 hours of sleep.
As for nightmares, closest nightmares I have are of past relationships that failed. Except in the dream, its us together happy or in the dream I go through the breakup again. So they aren't nightmares per se, but nevertheless, they can hit you pretty hard when you wake up.
thestialluz
I have nightmares almost everyday, I'm used to them. I've had them for years, since I was 11