I don't know if anyone will be able to help me, but I'm just interested. My DH has Crohn's disease. He was diagnosed when he was 18. At the time, children were not in his vocabulary. DH has been on a medication called Purinethol since he was diagnosed. He doesn't remember if the GI specialist talked to him about any problems with fertility. Well, I'm an RN, and like to be pretty educated about his meds. Purinethol is a chemotherapy agent, that can also be used on Leukemia. When I read the side effects, 10-29% stated that they have issues with infertility, which makes sense since it's a Chemotherapy agent. He's been on the med for almost 10 years now. I was wondering anyone had a similar problem, where their partner had undergone Chemotherapy in the past, and were you able to conceive? I'd almost rather know now, than continue trying, and find out in 6-12 months that it was all for naught.