I doubt it :rolleyes:! You never know...those dreams are bottled up inside your head, so letting them out might make them go away! If you still don't want to share it, it's totally ok.
What I do to prevent nightmares is listen to music :headphone (preferrably a CD so it eventually shuts itself off after I fall alseep). The songs and what they mean end up overriding any bad thoughts. Have you tried this?