Fed up

Sick of having arguments with SO about sex, he says it’s too much pressure on him and that we don’t need to do it so much, it’s frustrating that he doesn’t realise we can only get pregnant on certain days of each month. We have 0 passion left in the bed room and he even said he don’t want to have sex with me this much, 🤔 I don’t get it most men would jump at the chance to have sex so much! I’m sad that I might be childless for the rest of my life, gonna have to decide what to do?