I have been on yaz for almost three years. I am seventeen, I started taking it because of am horribly heavy period lots I cramping and acne. My doctor recently had me stop taking the placibo pills and all was ok. I went away for three days and forgot my pills. I immediately started taking them when I got home. For about a week now I hbe had an extremely light flow and it does not seem to be going away. I have just continued taking tv yaz. What do I do now?