This is interesting, but I really have no idea what it might be. Do you have a therapist or psychiatrist that you can talk to about it? That would be the best thing to do. About the baby bottle, is it possible that, while you were in the toilet, you heard a noise that sounded like it might be a baby bottle falling?

About delusions vs hallucinations....
Delusions are about thoughts. There are various types.
Hallucinations are about the senses (seeing, hearing etc.) perceiving something that is not there.

Does that help in understanding the difference? Language can be a challenge in trying to describe something, especially these kinds of things.