Can i get a diagnosis? am i skizo or do i suffer from derealization?

that used to happen to me, not the suicidal thoughts as in I wanted to off myself but just thinking about the realization that I will die someday, and the dysphoria derealization episodes I had all the time and it was like I couldn't breathe and there was cotton candy stuffed in my head. I tried a lot of different meds nothing worked except time i was 17-18 when that happened to me then after a year or two it just disappeared, mainly because I changed what was going on in my life and actually enjoyed living. That happening to you is a sign you are not at all happy with whats going on in your life, so change it and see if it goes away.