Frustrating

Why do some men have to be so stubborn? My husband is all on board with having another baby we are going to fertility doctor and everything, but sometimes I feel he thinks I can miraculously get pregnant on my own. He doesn’t get the gist that we have to have sex several times during the fertile week, he thinks as long as we have sex anytime during the month that will work, I got my positive opk this evening, and he said we would have sex even though we did last night also, for good measure, well when time comes to do it he goes I can’t cum 2 days in a row so it’s no use trying, Like really? Im so tired of getting my hopes up, just to be let down, we’ve never had sex two days in a row so how would he know! He won’t even attempt to try... I feel that I should just give up and forget about having another baby even though it’s something we want more than anything, But he won’t even put the effort in..