Tips??

Tera
So me and my fiancé have been trying and trying to have a baby, we just got the new on Friday that he has a tumor on his brain, so he want to have a baby in remembrance of him if he passes. I'm scared to death about it. But we seem to have no luck with having this baby. We've had sex litterally every night. I'm exhausted and honestly want to give up but he says he wants to keep trying. What can or should I do. I'm losing my Faith