Pull out method

My period comes in 5 days, but for the last few days my nipples will leak whitish liquid if I massage my breasts. My boyfriend and I use the pull out method (I know, not even birth control) and he pulls out every time but I also know that it’s possible for precum to have some sperm in it, we were also sexually active around the time I was ovulating. Just looking for opinions, no judgement please❤️