"i took yaz when i started developing cystic acne whenever my period was close. it completely cleared up my face after 1 one month. for 1 year, i was symptom free, but afterwards started developing severe lethargy a week before my period. it would be so bad that i would just be walking around in a haze. i fell asleep in class, couldn&#039;t concentrate and worst of all, i couldn&#039;t drive in fear i&#039;d crash. however, after my period started, this would go away. my breasts went from an a cup to a b cup as well. i eventually stopped taking yaz due to the hazy pms symptoms. my skin stayed clear until this very day. this pill changed my acne for the better for life. couldn&#039;t be happier with the choice."