I am 20 and had sex with ma bf 22 27march days my i had my due date on 9th april but my preods doesn't start ihad also taken 2 times pregnency test 1st test on 13 april and 2 was on 21 aprill both are negative but it wass a delay of 14 day then alaso preods dosnt came and also taken 5days 1 tablet resiston to get may preods but it also dosnt work can i be a pregnt ? And what to do to get safe from it pls ans me