I am on my third month of Yaz, and I honestly don't know what to ...

I am on my third month of Yaz, and I honestly don't know what to make of it. I has cleared up my acne for the most part, however, I still get new breakouts (which is obviously frustrating). It has helped with my cramps and backaches when I'm on my period, although I don't start until my 3rd placebo and I finally finish my period around halfway through my next week. Something that does trouble me though is that I have been feeling emotionally drained, constantly cranky, and just plain sad. A couple of days ago, I was in a really good mood, woke up the next morning, and felt like crying the entire day. Ever since, I've been in this low-down mood that I would do anything to snap out of. I hate it! I want to be back to my easy-going self...but I don't want to risk getting off of the pill and having my acne come back (which was the reason I started Yaz). I've tried everything else for my acne, and Yaz has worked the best. If I have to go off of it though, I'm afraid of the last resort: Accutane (not because of the birth defect risk, since I am not sexually active at this time, but because I have heard that it can give you chronic joint pain...something I honestly don't want). Anyways, I guess for now I'll just continue Yaz and see if I start feeling any happier...I can't be in a bad mood forever (right?).