BFN!! :(

Sierra
BFN!!!! :(
My husband and I have been trying for 6 months, all BFN.
My husband has had two surgeries, one from a tumor and one from getting kicked with steel cleats.....I had surgery to remove my Mirena IUD.
I'm not sure if we need to be checked, or continue to try....I'm getting discouraged, because all of his family is VERY VERY fertile.....And I'm thinking we may not be able to have kids.
What should I do??!