Short answer: you can forget about it. Your chance of having schizophrenia is vanishingly small. Be more concerned about your anxiety about having it, which is a typical symptom of OCD. Do you have a therapist? Cognitive therapy could really help with this anxiety.
Anyone's lifetime chance of becoming schizophrenic is about 1%. Most persons living with schizophrenia are diagnosed when they are much younger than you are now. You have other diagnoses, which means that unlike most you have received evaluations by mental health professionals. These professionals
have not diagnosed schizophrenia.
Although schizophrenia can run in families, many millions of dollars have been spent trying to find the genetic basis of schizophrenia and finding next to nothing. That means the family tendency is due not to nature but to nurture, or rather lack of nurture: schizophrenia is highly correlated with being abused as a child. Later onset is correlated with less "familial load" and in any event your familial load is minimal: neither parents nor siblings affected.
Here is a new paper with a lot of relevant data:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6500669/
Dx DID older woman married w kids.
0 Una, host + 3, 1, 5. 1 animal.
2 older man. 3 teen girl.
4 girl behind amnesia wall. 5 girl in love.
Our thread.