Phoenix said it right, sounds like Catastrophizing. I do this all of the time&no one can convince me different when I'm thinking the worst will happen. I am an awful pessimist-I can't shake the thought that if you expect the worst it will be really rewarding when I find out I worried or got upset over something that didn't turn out so bad. That doesn't help&I know it doesn't but I keep doing it. I tend to get really paranoid when I feel like this too.