abnormal uterine bleeding
"I was put on this to regulate  my periods and help my acne. I've been on this period for a little over a month now. I have had a lot more anxiety, many calf cramps and extreme irritability. It also has barely regulated my period. I had a period for one day which is good for most people but not for me considering I went on the pill because I hadn't had a period in almost a year. I haven't gained any weight and I have even more acne, but I went on estrogen pills before I went on the birth control which might be the cause. However the estrogen pills were supposed to be out of my system a month ago."