Hi! I just wanted to say that I was taking Yaz birthcontrol for quite some time (over 6 months), and I was pretty steady about it (I usually took it at about the same time, tried not to miss any pills, although I occasionally did). Anyhow, I just found out last week that I was pregnant, so I got pregnant on Yaz! Which isn’t to say that it isn’t effective, but I guess it was just a fluke thing, and everyone’s body reacts differently. So, just because you’re on birthcontrol doesn’t mean you can’t be pregnant. If you’re having any doubts, pick up a pregnancy test and go from there.