Having Heavier Menstrual Periods Than Usual
This isn’t about your period lasting a day longer or suddenly seeming a bit darker. Rather, it’s your period all of sudden lasting two weeks instead of four days, or having two periods in one month.
But to play it safe, if you have any changes in your cycle that last for at least two cycles (heavier, lighter, whatever!), it’s worth talking to your gynecologist, she says.