"i was taking yaz for almost 7 years and i loved it! my weight never changed, my skin was beautiful, normal sex drive, no cramps, 3-4 days periods. in 2013 i saw some weird spots on my face, after the consultation with a doc it turned out to be melasma (nothing dangerous but it doesn&#039;t look good) . one of the most common causes is oral birth control. it wasn&#039;t the yaz, just birth control with higher amount of progestin. i switched to mirena and that was the worst decision ever! acne, mood changes, gained 20 pounds in 3 weeks. i&#039;m going back on the pill this month and we will see how it goes, i will post about it in about 6 months."