Hi,
I think it is very common to worry about conditions such as this with anxiety. I had the exact same thing when I had my breakdown many years ago. I worried that I was schizophrenic, going to go insane, etc.
The mere fact that you are worried and aware of schizophrenia basically shows that you ARE NOT or are not going to become schizophrenic. People suffering from schizophrenia and psychosis generally do not know they are unwell. It is their norm and they are so entrenched in it that they do not question whether they are ill......they just are and it is a terrible state of being.
A rational, sane person however will question themselves. A very anxious person/phobic person will worry themselves into a state of fear about becoming seriously metally ill, but this is purely just ANXIETY talking and driving the fears, and driving their symptoms.
Anxiety brings with it a host of symptoms that we might think is serious stuff like schizophrenia - derealisation/depersonalisation, that spaced out feeling that makes us question whether we are going crazy, etc. This is NOT the case - it is just our super-anxious minds playing tricks. Depersonalisation/DR is the minds way of trying to remove us from high anxiety....a form of protection, that's all. That is what creates the 'unreal' feelings and sensations.
Please trust that you are not going crazy, you sound to me like you are just super-fearful and anxious. It makes us think all kinds of stuff that is not the case. X