Just luck?

Abrina • June 24th 2017 my beautiful baby boy was born Alijah Jay Kneeland I love you 💙👑
So me and my SO have been together for 5 years the first few months of having sex we used condoms.... That was five years ago. Ever since then its just been raw dawg and pullout i guess u can say pullout game strong 💪🏾😏 anywayysss just wondering am i just getting lucky or do you think its something i should worry about , we have no kids yet and i have never been on birthcontrol i have heard that precum and pulling out still are not always efficient and so i am questioning why i have not gotten pregnant yet happen to anyone else?? 
We are both 22