Is pregnancy possible b4 your period? i know an egg must be present but can some1 get pregnant the week before their period and get menstral 1 day late

Yes: Pregnancy is always possible in a reproductive age female, who is not menopausal engaging in unprotected intercourse. While regular menses are a reasonable indication of ovulatory function and timing; it is not a definitive indicator and should not be used as a contraceptive method. When in doubt, do a pregnancy test and repeat, if necessary.