Pregnancy Chances?

I’m on the birth control pill. I’ve never missed a pill once and I take it on time. My bf and I have had sex without a condom a few times. He’s never came inside me, we always pull out. Problem is I’m young and definitely don’t want to get pregnant. I’m getting rlly paranoid about it cause I’ve heard so much talk about women ending up pregnant while on the pill. I don’t get my period for 2 weeks so it’s gonna be a stressful time until I see red! What do u ladies think? I plan to use a condom from now on cause I’m way too nervous.