Mitomycin treatment for cancer and ttc

Lauren

My husband was injected one time in the bladder with mitomycin after a small tumor removal. I am 38 and he is 46 we are ttc. No one said to refrain from unprotected sex and ttc, but I read we shouldn't try for 6 months, but that was when treatment was in progress, meaning multiple doses. My husband had only one dose. Has anyone conceived in a situation like this? Anyone get one time chemo and conceived or tried?