"heavy bleeding and intense cramping were my primary concerns for starting birth control and since i still bled heavy on my first pill i was switched to yaz. the good is that the mild acne i did have is now non-existent, no more cramps, and my cycle is the lightest it&#039;s ever been. i can actually *want* to do more than stay in bed during my cycle. the bad is the random spotting. theoretically it&#039;s caused by not taking the pill at the same time everyday but i keep a pretty tight schedule so it sucks. the mood swings are also discouraging.  i feel myself getting mad or either sad about literally anything more often now. i&#039;ve also picked up about 10 lbs despite the same eating habits and activity level."