Spotting??

Sarah • I'm 22, in a relationship, and I want to be more positive in my life. Twitter: @piespice

I was taking Yasmin for a few years. On Yasmin my period was very regular until a few months ago. A few months ago it started coming later and later into the sugar pill week, and for one or two weeks after my period I had really bad spotting. I talked to my doctor and she changed my pill to Yaz last month, but it's not helping with the spotting. My period ended on Monday, it's currently Saturday night and I'm still spotting. I'm going to talk to my doctor about this but in the mean time, what do you guys think? Why am I suddenly spotting so much? What should I do?

(Side note: I was taking Yasmin and in taking Yaz now because they help with acne and I have bad acne without them)