I believe there's testing of the sperm to see if it is healthy or not. I could be wrong. I have a daughter now and had Hodgkins lymphoma 12 years ago. I also have a friend who had two kids post chemo for leukemia and they are healthy boys. here's a great article from Memorial Sloan Kettering https://www.mskcc.org/cancer-care/patient-education/building-family-information-men
Thank you so much for responding ladies, means a lot!
I had 1 post chemo and currently pregnant. I had stage 3 bone cancer.