Pregnancy

So I’m pretty new to sex and I’m slowly getting better about not being worried that I’m pregnant. I’m on bc and take everyday at the exact same time. My bf wears a condom and always pulls out before finishing. I put the condom on before we ever start. Could I get precum on my hand, touch the condom when putting it on and then get pregnant that way?

Also, if at the end and the condom didnt break and there are no leaks, I should be good right? And not worry about pregnancy?