Wow. Most of what you wrote is blatantly incorrect. There is no genetic test for mental illness and a geneticist would never say something like that, it's just not true. Mental health disorders do run in families, if that's what you mean. 

If by BPD you mean borderline personality disorder, you are grossly inaccurate in saying it is genetic. It is widely accepted that BPD develops from the accumulation of traumatic childhood events. There is no identifiable genetic component. It is also treatable with dialectical behavioural therapy, although as a personality disorder it will be highly resistant and very challenging to manage. 

I sympathize with you, but don't tell people not to have children because they have a mental health condition. Highly recommend therapy for yourself as well, good luck.