Why is it so hard for me to get pregnant with my significant other ?? We been together 1yr and some +months . My cycle is very irregular ! I never been pregnant ,never had an miscarriage, and never had an abortion, was on birth control some years ago but seems like it kept my cycle on longer therefore I stop taking them . I'm only 24yrs old and just curious why haven't I got pregnant yet when knowing my boyfriend and I have constantly unprotected sex.