"do not use this birth control. i was on yaz for a year and it did a great job at keeping facial hair and acne at bay for my pcos. i had no negative side effects except for breakthrough bleeding which after dealing with this tri sprintec, doesn&rsquo;t even compare. the first two days i felt fine. after that, forget it. i started to get extremely bloated, gassy, nausea, and heartburn. it would come for a couple hours each day. now, 5 days later everything is constant and won&rsquo;t go away i feel absolutely horrible. i went to the er last night thinking i had a bowel obstruction but now thinking, it has to be the birth control. can&rsquo;t wait until this horrible pill gets out of my system."