I was on yaz for about 8 months and loved it. I didn't break out at all and I even lost weight. It helped a lot with PMDD. I was very satisfied. Then, after my 4th month, I started experiencing long periods that lasted about 9 days and breakthrough bleeding that lasted all month. My GYN switched me to Loestrin 24 Fe. My period is now very light and about 4-5 days. My only complaint is that I have horrible acne! I have only been on Loestrin 24 Fe for a month and a half so I wonder if I should just wait it out and see if the acne improves. I am very pleased that my period is so short, but the acne looks terrible!!