What are the chances of getting pregnant from precum? Have you ever? (please comment)

I’ll try to explain but it might sound weird so please no judgment.. I’m on the pill, try to take it correctly (around 9:30 every night) but sometimes I slip up and take it around midnight. I always use condoms as well (yes I know condoms and the pill is nothing to worry about) but sometimes he gets inside of me for like a minute and then we put a condom on. If he has precum, could I get pregnant from that? I know it’s all circumstantial. But what are the chances?