What do i do?:/

My husband and I have been together for almost 10yrs. We do not have any kids together but he has 7. I asked him if he had a vasectamy he said no. We have been trying for 5yrs now. Someone just came to me and said they heard he did have a vasectemy... Im loosing my mind. He works out of town so I'm trying to hold it in until he gets home in 2weeks. What do I do