abnormal uterine bleeding
"First month I had pretty bad cramps but that was a big reason I went on it, along with very irregular periods. After that month though I barely experience cramping, my periods are light, and fairly short (4 days). I'm used to heavy cramps so bad I throw up and 6+ day periods.  My skin is the clearest it's ever been. I did bloat very bad (7 pound gained) around month 4 but now (month 5) all bloating is gone and I'm back to my original size. It hasn't taken away any PMS symptoms besides acne and cramps but I'm okay with that. My breasts have grown a cup size (32 C to 32 D). So far so good. Plus... No babies!"