i need help

so i haven’t gotten my period and it is about 2 weeks late, i’m stressing a bit because i’m not a virgin and my mother can’t know. i took a plan b pill about a month ago because i was ovulating and the guy wasn’t sure if he pulled out on time so just to be safe i took the pill two days after the day i had sex . i then got my period after a week and i haven’t gotten my period since then i haven’t done anything and i’ve been having period symptoms like cramps and tender breast but i still haven’t gotten it. Is it normal for my period to be so late?