premenstrual dysphoric disorde
"I've suffered from severe premenstrual dysphoric disorder my entire adult life. Yaz has been wonderful for me. I began taking it nearly 2 years ago. It took some time for my body to adjust to Yaz, probably more than 6 months. The main side effect for me was heavy bleeding. 

I've found the Yaz to be wonderful as long as I take it religiously the same time each day, within 1-2 hours. And deviation seems to bring on side effects. I recently switched from taking it before bed to taking it in the morning. The PMS mid-cycle was terrible. I may have to add a low dose of Prozac to help me through the adjustment."