I got my first shot in March of 2007. The first two months were great.. no bleeding. But on the third month I started a very heavy, steady period. I got my second shot (the doctor said the bleeding should soon stop) but it didn't, at all. I HAVE BEEN ON MY PERIOD FOR 8 WEEKS. straight, i have no idea when it's going to end (and neither does my doctor) very very heavy, not lightening up at all, the most severe camps of my life, MISERABLE. I am extremely emotional on the shot, I'm getting bad headaches, and I am having trouble loosing weight. As soon as the shot gets out of my system, I am never going back on it. PLEASE. do not get on the shot.. you will regret it.