If i just recently became pregnant, could my vaginal bleeding last 4 days?

Can check preg. test: If a woman doesn't actually know whether or not she is pregnant, and she starts having 4 days of vaginal bleeding, that could be her menstrual period. If the bleeding looks like her normal regular period, then she can wait a month to see if her next normal regular period happens. If the 4 days of bleeding looks odd to her, then she can check a pregnancy test (about 3 weeks after when she had sex).