"i&#039;ve been on yaz since i was 23 and i&#039;m 28 now. in the first month or so i had mild side effects-felt a bit dizzy and had some breakthrough bleeding, but they subsided after a month or two. i have pmdd, and yaz has been a godsend in regulating my moods-instead of being out of control for 3 weeks, i only have pmdd for little less than a week.  it&#039;s definitely helped me and i&#039;d be a hot mess without it!"