"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&#039;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&#039;re related. i&#039;ve also had way less of an appetite, which was usually the opposite when i took birth control in pill form. i&#039;d love to have a more natural form of birth control, but at this point, i&#039;m happy with micronor as a solution."