polycystic ovary syndrome
"I have been on Yaz for a little over a year now. My doctor put me on this pill because it is apparently a good one for PCOS. This pill did keep me from getting pregnant and helped somewhat with cramping. However, while on this pill I gained about 12 pounds and my sex drive was non-existent and I'm 21 so that's not normal. Also, while I was on Yaz my periods never came the day it was supposed to but rather the day it was suppose to end. My periods were often heavy and irregular. Before I was put on Yaz I was on Seasonique and today I am going back on that pill. I was on Seasonique for 4 years before Yaz and I never had any problems."