Help me please ☺️☺️

So I have a very large fear of getting pregnant as I am only 17 and a senior in high school. So my boyfriend and I always use condoms, birth control pills, and he always pulls out way before he is about to cum and I finish him off outside of me. Should I still worry about getting pregnant or do you think I'm doing enough to prevent it? I usually limit the amount of times we have sex to about once a month and it really upsets him because he wants to do it all the time. Advice to make me worry less??☺️