birth control
"I started taking this, because my doctor said that this pill uses a hormone similar to progesterone (what the human body produces). The other pills I've tried (Tri-Cyclen, Yasmin) use estrogen, which is more likely to cause blood clots, heart attack, high blood pressure and stroke. 
I had minor spotting, and then no period at all. I have had a few headaches, but I am not sure if they're related. I've also had WAY less of an appetite, which was usually the opposite when I took birth control in pill form. I'd love to have a more natural form of birth control, but at this point, I'm happy with Micronor as a solution."