Condom use

How often do condoms break when used correctly. I’m on the pill but nothing is 100% so we still use condoms and he pulls out. I’m not gonna lie, I’m terrified to get pregnant, and even though I’m on the pill and he pulls out I’m still a little worried. Do condoms break pretty easily and common or is it rare for them to break. If they do break, will you notice it and be able to pull away. He pulls out before actually cumming but precum can still have sperm