Pull out method

So I’ve been on birth control for about 6 months now and recently me and my fiancé started using the pull out method paired with the pill. I get so nervous I’m going to get pregnant that I literally take a pregnancy test every month. We used to use condoms but he doesn’t stay hard with them thus we are doing the pull out method. I was wondering if I should just not worry so much or should i make him wear a condom? I’m also pretty good at taking my pill and don’t miss any.