I am 14 years old and i had sex a week before my period was supposed to start. i'm about 3 days late and i'm worried. my boyfriend and i used a condom and it did not break and he pulled out before he climaxed, so there's no way i should be pregnant but it worried me cause my period hasn't come yet. i do not have any symptoms for neither my period nor pregnancy. please help. i can't just go out and buy a pregnancy test without my parents knowing. if they found out, they would kill me . HELP .