I don’t want to get pregnant. How do I tell my husband to use a condom?
This conversation is easier to have before you are in the heat of the moment, so talk beforehand and make a plan to always use a condom. Explain why it’s important to you, and that it’s one of the surest way to protect against pregnancy. Having a conversation will make it easier to plan and say “We already talked about this and promised to use condoms to be safer.”
If he is still coming up with excuses, there is only one thing left to say: No condom? No sex. Until you find another solution.