Definitely check it out. I do know of one couple who now are infertile due to medication the DH is taking. It was the wife's GP that told her about the side effects when she casually mentioned to him the meds that her DH was on. If they knew the side effects they could have been prepared and froze some sperm. Now it is too late, as her DH will be in to much pain to stop the medication for long enough to get his sperm count back up. BTW it is medication for a skin related disorder. (I am not writing this to scare people, and I definitely would not tell it unless I had not been told directly by the couple involved)