Hmm have you ever heard of hypnagogia?

It's basically you're body slipping into dream states. You may see or hear things. Auditory hallucinations or visual. It's more common when one is under high stress or in narcoleptics. And it may be accompanied by lucid dreaming.

For me it sounds like someone is RIGHT up against my ear whispering. Sometimes it's my name. Sometimes it's a random word I can't make out. Sometimes it's garbled, short sentences that don't make sense. It sort of feels unreal and sometimes it feels evil. (which is common among hypnagogia). It may not explain all of it, but it may get worse at night because of this.

Otherwise, yes I do experience this. But I outright tell them to stop. "It's not safe to come out right now". If I allow them to roam, they make me really ill. It's like being on a really wicked roller coaster. I have gone through many days spent all my waking hours on the computer "shopping" for each voice in my head, only to not buy anything in the end because another one would scold about money spending. And another would say how "stupid" it was to place said item in the cart. I eventually had to take back control or I felt I was going to loose my insides. It makes me nauseous thinking about it. The ride of that is enough to make a person sick. I in no way got rid of them totally, but for the most part the ones that are harmful don't come unless I permit them too. I'm sorry you're going through this.