abnormal uterine bleeding
"I'm 16, almost 17 and I went on this because I had really heavy periods with bad cramps and would pass out regularly. 

I've been on this for a little over two weeks and my period hasn't stopped. It was heavy for the first four days and then it became really light. For the last week it's almost like spotting, which has never happened to me before. My breasts hurt really bad. I'm not sure if I've gained or lost weight, because I started dieting right before I went on the pill. So far, I hate the pill, but it's only been a month. I'm hoping the next months will be better than this one."