Yeh i had a "simliar" experience. See, im wiccan and rpoud. but about...i dont know 6 months ago i got into the darker side of wicca. and the night i tryed to go to sleep, i was lying in bed. in pitch blackness and all of asudden this image pops up in my eye vision...a demonic one. everywhere i looked i saw it. i freaked out and grabbed the remote next to my bed and turned the tv on...
it went away after i turned on the light.

dude it was so freaky