I've been on my period for 3 weeks now almost a month and im on birth control but I've been on it for 3 months. And when I used the pill before this never happened. I had a kid 7 months ago c section. Would that be anything to do with it? Should I go to a doctor or just wait it out? And sometimes I miss a day on the pill but I double up on it the next day. Can someone please help?