I started on Loestrin 24 in October of 2007. I had some weight gain due to an increased appetite, but after the four month waiting period and a little exercise, the weight was gone. I actually noticed that after a while, it curbed my appetite. In October of 2008, I decided to give Yaz a try. That was a mistake. I was an emotional wreck, constantly hungry and bloated, and my periods were much heavier than on loestrin. So after 4 months on Yaz I switched back to loestrin, been taking it for a week, and I'm happy. Women just have to keep in mind that everyone's bodies react differently to different BC, so give it the 4 month trial run and if you're not happy switch off it. Most of the time there is some kind of BC that will be perfect for you.