I just started my third cycle of Yaz. I have never had really bad cramps, but started this for the birth control aspect and to help with mild acne. The first month I did not notice any change. After taking the 2nd month and starting my period I was so bloated and had the worst cramps of my life. It is now three days after my period and I am still bloated with a constant stomach ache. I am hoping this is just from my hormones changing, and will continue to take Yaz until my next period.