Reading all these messages makes me reflect on my symptoms. I have been on Yaz for less than 1 year. I switched from Desogen for no major reasons than wanting shorter, lighter periods. Wrong choice! A few days ago I began having issues breathing fully throughout the night. I had been experiencing a bit of heartburn and thought it was something I ate or ate too late. However, reading all of this makes me very concerned over the control Yaz has on your body. I have also experienced moodiness which I never had before with Desogen. I realize every pill is different but not being able to take a full deep breathe is not okay. I nearly had an anxiety attack last night. Not to mention, I thought I was having some asthmatic issue but never had asthma a day in my life before! I am a healthy 27 year old. I work out and eat right with no family history of heart issues. I am discontinuing Yaz this evening and hopefully these crazy symptoms will go back to the way they were....gone! I think if we write more about these experiences, the FDA needs to step in and study this!