Is it normal to be a weirdo?

So, I know that this is not necessarily the right place for this, but I don't have the possibility to consult a professional at the moment and I need opinions so that I don't drive myself crazy anymore.

Here's the thing:
Don't know exactly when it started. Everything I know, I will share as far as I can remember.
I've been going downhill slowly for a few years now. Emotionally, mentally.

For over a year now, I have felt as if I no longer had any feelings. I know that's not possible, but it is. Sometimes, I can feel something, but it's not much and it seems it's far away behind a wall of glass. Fear, anger, depression. Everything from time to time, but mostly just emptiness.
I'm constantly nervous and tense. Even though I've been on leave and in quarantine for two weeks. Nothing has changed.
Except that lately people often ask me if I'm okay because I look serious and depressed. Yet the expression on my face is, in my opinion, absolutely exactly what I feel: namely, nothing - nothing but subliminal nervousness.

I forget a lot and misplace or lose things when I am not wearing them permanently. And even then it happens from time to time.

When I work, I am now easily distracted. In general, work and household chores are harder to do. Community life overtaxes me and I can hardly stand it among my roommates. Music helps a bit with ignoring the noises and concentration but it's not going to safe me from not doing as much and as good as I should and could if I could.

For several months I have had the constant feeling that something bad is about to happen. I know my roommates are talking about me behind my back, want to get rid of me and don't want to allow me to have my education. But again as I tell anyone I feel I should be able to trust they do nothing because it's "all inside my head".

I am also told that I walk funny. I have already been able to see the proof in my shoes. But tbh again it's nothing I'd say is not normal for me. I walk just as usual. They tell me it's weird when it's weird to even have what we call fingers, so what's the point?

I keep imagining apocalypses, researching surveillance technologies and informing myself about paranormal things, rebirths, ghosts. For me it's normal, yet they keep watching me like I do something bad.

My thoughts discuss with each other. Sometimes I can actually hear them. They can be pretty mean. To me, my friends, my family. One of them always tells me I'd to kill my one roommate before he does it. The other just keeps saying that they know already, that they can hear me, smell my fears and that it's too late.

I often have the feeling of being infested with parasites, but nobody can see them and nobody believes me that they are there. They love to be in my face, where they crawl and crawl and crawl into my nose, my ears, around my eyes or into my mouth. Once there were some in my throat and I could not breathe. When it's really bad, I start scratching myself up, hitting myself or putting objects or fingers in my ears and nose to kill the critters.

It happens that a phone rings or the door rings and nobody is there, or that someone knocks on the door and no matter where it is, there is nobody there. Don't even know where that noise comes from. I check everytime but it's never the right place as there' nothing there where I check.

Among people I feel lonely, sometimes threatened. Even with friends that I like. It doesn't make sense. I do not know how to deal with people anymore. They don't understand me and I don't understand it.

A former biology teacher once asked me and my parents if I had borderline, but I was never diagnosed with it and I have neither an unstable ego nor a pronounced erratic emotional response (or whatever you call it). If they ever try to lock me up, I swear I'm gonna find her and make her a bad day.

My environment, a few of my friends, my colleagues and my family always tell me that I am special. But to be honest, I don't think that this is it. Everyone's nuts about nothing.
I am afraid that something is wrong with me and that I will eventually lose control of my pathetic life. I fear they laugh if I tell them what I'm experiencing.

I know nobody here can diagnose me. And I don't want to be. Personally, diagnoses are nothing more than burn marks, which in case of doubt are used to take away your rights and imprison you. I'm just afraid of what's wrong with me and whether people will exclude me for my kind in the future.

Has anyone had similar experiences in life and can give me a reason why I shouldn't think about it?
I have never been a hychondriac, but I just can't shake this thought that something is wrong.
I've been looking for reasons for these changes for at least a month now and I can't make any sense of it. I'm desperate about it already.

EDIT: I have already been to a neurologist for dizziness and also mentioned scratching there. Thereupon I was recommended to talk to a psychologist. The appointment is still in place, but I don't think that Corona won't put a damper on it. I was also asked to have a cMRI done to rule out a tumor. I haven't been able to do that because of Corona.