I used to think that the things in my head were unique to me until I was diagnosed and came to this site. Knowing other people had similar thoughts helped me to accept my diagnosis. You haven't mentioned if you go to a therapist. I think that should be the first step. There are so many things that could be the cause of what you described. You also didn't mention if you take medication. I wasn't keen on medication until it helped me to slow down my compulsive thinking and my anxiety. Between the two I was frantic all the time. Now when I experience derealization and depersonalization I don't go into a complete panic. I can think more clearly and that helps me to work through it. I hope you find out what's going on but I think you need to talk to a therapist first.