OP please listen to this advice. You may not think it's warranted, but please talk to a health professional about this. Your post has telltale signs delusional, paranoid thinking.
The worst that can happen is the doctors will say nothing is wrong and you will be out a few bucks. But more likely they will help you find out what is happening much better than strangers on Lemmy ever could.
If you absolutely refuse to go to a medical professional, at least check your apartment for carbon monoxide or black mold.
Good luck.
You absolutely need to see a doctor.
Be logical here, the most likely explanation is that your brain is not behaving for some reason.
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