I’m scared to have sex

So I’ve been having sex for just a little bit now. I have the nexplanon and my boyfriend always wears a condom and pulls out with the condom on but I’m terrified that my birth control doesn’t work and the condom is going to break and I’m gonna get pregnant. I can still feel my implant but I’m just a paranoid person. Should I worry at all. I switched from the pill to this because this is supposed to be more effective and the most effective birth control out there. Am I too paranoid