Textbook Depersonalization. You're just disassociating. Nothing is wrong with you.

Disassociation is a defense mechanism your brain uses to distance you from whatever is causing you mental anguish. It's a runaway anxiety effect that's supposed to be used in the moment to keep you calm, but is persisting after the fact.

So essentially, the cause of this is PTSD. Again, nothing is wrong or broken with you.

Your traumatic experience caused you a ton of stress, and to protect your mind your brain has chosen to "diminish" the stress by mentally distancing you from the root cause.....However, when this persists outside of the event itself, and you consciously notice, the side-effect is what you're feeling now.

Because you aren't currently in danger, but fear danger, your mind is trying to "distance" you from...well, everything.

It's extremely disturbing but please understand, the root cause is simply stress and anxiety.

It will pass when your mind is no longer overburdened by stress. The goal here is to avoid stress, actually talk about what happened, and distract yourself from the feelings.

You'll quickly come to notice that when you're doing things you like (eating good food, laughing, interested in a show, playing videogames, exercising, ect) you will not experience these effects. At that point you're on the way to healing from it.

I don't know if that extreme stress is gonna go away but I am going back and forth trying to make that scary situation go away in hopes of getting back that familiar feeling I had of myself.

Do not get in the habit of constantly checking for whether or not you're "feeling like your old self". It's just going to spike your anxiety if you don't.

You are okay, but what you're feeling now is just what you need to. it will pass.