dear OP, welcome to real life. No, not everything is all rose patches and prim fuck all. Some people just hear weird, crazy things when they're drifting in and out of consciousness, holy shit it's like you're brain is functioning on a whole different level, oh wait it is. When I was like 15 I noticed I hear voices from my past yelling unintelligible things when I'm dozing off. I got used to it. You just happen to have a more active imagination that, honestly, will probably fade with time.
If it helps any, here's the extent of knowledge I've learned from all the strange yelling I've heard in my head. Your brain is the only active ingredient in how you perceive the world around you, these things you are experiencing are entirely internal, no external "demon" is acting upon you, deal with it; being aware of this is the most useful tool you have; the conscious mind is stronger than the subconscious mind only if it thinks it is stronger, if you allow your subconscious to control you, it will.
