I don't know, but there is commercials telling women not to take that BC. chances are it is probably caused from that.
Your description of the discharge and abnormal period is actually fairly normal when beginning yaz (or the generic). You should only be concerned if there is a funky odor, uncomfortable raw feeling, or itchiness - then there is most likely an infection.
it just your periods is late or may blood test will be more accurate if take the test.