I've been wondering... my sleeping habits include sleeping with a loud-ish fan on and no lights whatsoever so that my room is nearly pitch black..

I then heard that sleeping in a completely black environment can be disorienting when waking up and if thats what im used to then if i had a false awakening wouldn't i imagine it as a completely black room?? And could the fan noise have any bad effects on my dreams or remembering dreams or anything??

I guess what i'm asking is, does anyone here sleep with a small like on to help with lucid dreams and how do steady, ambiance noises affect your dreams? Thanks in advance.