"i&#039;ve been on yaz for just about a month. i&#039;ve noticed some improvement in my acne. i started yaz just for birth control and because i had having a lot of anxiety and my doctor thought it may help along with my anxiety meds. i haven&#039;t noticed a difference with taking yaz yet, but it&#039;s only been a month and i don&#039;t exactly have pmdd. so i will keep taking and see what happens over the next few months. the very first pill i took gave me nausea but that was it."