Hi starfall. My husband has an inversion on chromosome 5. His dad also has it and they had 3 children, but over a span of 14 years (they never prevented). So in our case, it is possible to have children naturally, it just takes longer. We did PGD a few years ago, and out of 6 embryos, only 1 was unbalanced on chromosome 5 (there were 3 chromosome 5); the rest had the same inversion as my husband. We got a beautiful boy out of the procedure, he is 3 now. Good luck to you and be careful with what people tell you --- we were told crazy things by doctors who don't really understand the issue ( like, a doctor said we would need donor sperm bc of the inversion, which is completely wrong).