I have now missed 2 periods! my last one ened aug 4th. I have not had sex scence a mounth befor that one. that period was very heavey and lasted 7 days! befor that period i had just finished taking birthcontrol. My periods had never been unnormal with or without birthcontrol, i took it for PMDD, but desides the weight gain i experanced was not worth it. I even took a pregnacy test and it is NEG. What could be the resone i have missed 2 periods after never having a period even a week late?????