I posted this on another subreddit a few days ago and no one replied so maybe this is a better place to ask

Ive had this for years and i always feel like no professionals take it seriously enough and whenever I've googled it it doesn't come up with the things I mean.

I have paranoid thoughts BUT I know they're not real. They still scare the shit out of me though. for example, I have a thing about windows, especially at night. I constantly think thoughts like "someone is looking at you through the curtain" and I know no one's there but my heart races i feel clammy and out of breath and overall just feel like I saw a ghost or something. I also have this about mirrors. maybe cuz they look a little like windows? ill be lying in bed or walking past one and will think "someone is going to come out of it" and like??? wtf no they're not that's physically not possible and i KNOW that but i still need to run away and cry. Well, at times it isn't always super clear to me that its not real but after the feeling is gone I always know it wasn't real.

This kind of stopped for a while but a few weeks ago the thoughts got bad again and now i have to have my mirrors all covered and/or turned around. I haven't opened my curtains in weeks because of it. I constantly feel like I'm being watched and occasionally I see things moving in the edge of my vision. I have to have all windows and doors locked at night. But i know its not real and google has barely got anything about people experiencing this. as soon as i mention "paranoia" it just talks about full-blown delusion and psychosis, which i don't have (at least i think i dont). so, has anyone else experienced this?