I just started birth control. I took it for the 3 weeks and the week off I got my period but it was light for 4 whole days. I usually get atleast two days of really heavy bleeding but I didn't get any heavy bleeding. I got really bad cramps though. I wasen't using protection before I started the birth control and am wandering could I be pregnant or is it just a change in periods because of the birth control?
WEll, one of the reasons women take BC is to lighten their periods. So, I would assume it was just the normal side effect. You could always test and find out for sure as it is possible that you are pregnant though not very likely.