I go go back and bug the doctors to run more test, such as a ultrasound?
I had my little girl on march 18th, and 3 weeks after i had heavy bleeding, and i kept getting turn down at emergency and at teh doctors, that there was nothing wrong, but the bleeding was not normal. turns out, i needed a d&c, and i had that april 16th and iam still bleeding. so i dunno.
i would get checked.. it could be just your period..??