If a womanhave unprotected sex a day before her period, and then the period comes, can she still get pregnant even though the egg has passed?

Pregnancy: When a normal menstrual period occurs the lining of the uterus sheds and thus implantation of a fertilized egg cannot occur. However, spotting only without a normal period can be a early sign of implantation of a fertilized egg. And so, if the period flow was not over a period of days i would recommend pregnancy testing by your family physician.