It doesn't sound silly. It may be odd but that isn't silly or unusual and definitely not something any of us are going to be judgmental about. I can only speak for myself but any delusions or illusions I've ever become aware of were brought to my attention by a personal epiphany... not by someone pointing out the delusion.
I don't even pretend to be psyche literate much less a degreed professional so I can't speak to your issue or your diagnosis specifically but many of us have erroneous diagnoses, mixed diagnoses, and even as yet to be diagnosed issues.
These thoughts sound as if they are crossing the barrier between the dream world and the waking world. They are repulsive and abhorrent to you in your waking state. That's a good sign. They wouldn't be upsetting to you if you were "bad" or "evil." I don't believe in supernatural beings of any sort so to me so what you're describing sounds like a reality problem.
Can you clarify things a bit more by telling us if you are really talking about dreams or conscious thoughts or somewhere in between?