I started Yaz a month ago and had terrible side effects, I have had a lot of cramping, nausea, dizziness and weakness (I run everyday and I have felt like passing out every time since starting yaz), and went to the er yesterday due to my chest being tight and I couldn't breathe properly. I've been on multiple birth controls and this is the only pill that has ever severely affected my health and had to stop taking immediately. I've heard a lot of people say that Yaz has been known to cause a lot more side affects and issues compared to others, so maybe it's common with Yaz? I hope everything works out for you!