Who here has been using withdrawal method and hasn’t gotten pregnant yet?

I want to know. Who here has been using withdrawal method and hasn’t gotten pregnant yet?

Long story short... I had sex like 12 times+ with my boyfriend and we were unprotected but he pull out successfully every single time. He always make sure that he pees after sex so that he has no live sperms inside (his precum doesn’t have sperm from last sex). I also made sure that I wasn’t fertile ( I was on my infertile days). We were careful but we know it’s not also safe. My boyfriend and I will get married later in like 2 years but we are very secured. He is successful but I’m still a college student so I don’t want kids.

Tell me your stories. Who hasn’t get pregnant YET with withdraw method?