OP, I don't mean to be to be insulting or malicious but this is kinda funny in some sense.
It's like being afraid of being afraid of something…or something
I don't know how similar I'm to you but I experienced something similar, I guess?
When certain events made me doubt my sanity?
So one night I hear these gnawing sounds while laying in my bed at night half-asleep. Being the former owner of hamsters, I thought I knew what gnawing sounds like. They used to nibble on all kinds of shit including the same carpet that I have in my room.
So vermin freak me out and I even buy a mouse trap the next day. My sister thought, that I was insane.
After a few days of trapper's misfortune and laying in my bed again I suddenly realize what these sounds were.
I just switched rooms and started sleeping in a wooden attic and sometimes the wood just creaks during temperatures changes. I must've interpreted these as gnawing sounds or something. Only in hindsight I regardes this experience as having been potentially psychotic.
Fast forward a few months, I stayed at a friend's shared appartment. Trying to sleep on my new air matress on the floor after emptying a beer crate.
Suddenly, I hear these tapping sounds that insects or spiders make or which I imagined them to do. So I try to ignore them but in my head I see some kind of spider's nest breaking up and thousands little spiders exiting it, starting to roam around and going towards my head, like in these horrors movies or gifs from down-under and my arm actually starts to tingle a bit but it's not a visual hallucination.
So I freak the fuck out and jump into a standing position pulling my cellphone light. But there's nothing. Just my brand-new air matress crackling because it hasn't been used before. I didn't want to sleep on the floor again after that, though.
My psychatrist didn't regard these events as psychotic.
Diagnosis: Major Depression but I'm med-free and in remission right now. I had my very last appointment 2 months ago.