If you were me, would you stress

So I’m on birth control and I take it religiously. 7:30 on the dot every day. My boyfriend wears condoms and he makes sure to pull out before finishing. I’ve only had sex like 3 times and I’m kinda worried about how protected I am. How possible is pregnancy if I keep doing this. I’m 19 and in college so I really can’t afford to be pregnant and have a baby right now