I'm sorry so many have had such negative experiences with YAZ/Yasmin. Mine has been nothing but good. No other pill has worked for me with regard to my PCOS, painful cramping, bloating, etc. and I've been on it over 4 years. When my insurance wouldn't cover the cost I tried others as a substitute, and none worked half as well. On any other pill my periods were so painful, that cramps woke me up in the middle of the night. I pay out of pocket for it because it's the only pill that has really helped me...and I tried 4 or 5 others, all with no benefit/relief for my painful periods and PCOS.
As for mood swings/depression, I was/am already on a daily low dose of paxil, so perhaps that preempted any mood effects like those described by some. All I know is, this pill works for me when nothing else has and the only real negative side effect I have from it (if you can call it that) is increased urination from the diuretic to counteract bloat. Can't say I mind so much.
I'm sorry it's not been the same for others. :(