I haven't said you're crazy, I said you're horny. There is a difference... Or so I would like to think.
I just believe it's all the power of suggestion as far as paranormal accidents go. Keep telling a kid there is a ghost in the attic, and there is a very good chance he will eventually start hearing sounds in the night.
In this case, you say you are "into" paranormal, which means you believe or want to believe the ghost might be there, perhaps at some level, wish the ghost to be there. Then it is natural that you might have lucid dreams related with such a topic and, perhaps not willingly, misinterpret lights and sounds once your brain gets a bit slower before/after/during the sleepytime.
Just saying.