Oh yes I forgot a few things. I also experience extreme hot/cold flashes. My husband yells at me because I am constantly turning the thermostat up and down. Also I am losing my hair, much more than other women I know. I attribute this to my PCOS, which already has a side effect of thinning hair, but I doubt Yaz is helping it any. At this point it's hard to say how many of these side effects are not Yaz related, and it's quite possible that 95% of them aren't. I know I'm young and still maturing, however, these headaches and nausea are not normal (and no I'm not pregnant).
If Yaz works for you, that's fantastic, but for those that are having physical/mental/emotional symptoms that you don't feel are normal, please get yourself checked out. Even if you only go off Yaz for a month to see how your symptoms are affected, please do so. Every birth control pill works differently for every woman, and it might not be for you.