My period is 3 days late and i have seen brown discharge, followed by yellow discharge for two days.. 1 week before my period due date. I never had sex or had a boy friend.. I had my midterms and assignments for the past two weeks and i was super busy and i sleep late and wake up early. Now my period is late and im really worried !!! It's really silly to ask this CAN I BE PREGNANT !!! although me being a bio student ... cuz when i searched yellow / brown discharge it said tht it was an implantation bleeding and it scared me alot !!! Also im having bitter taste in mouth for the past 3 days..