I've been using cetaphil for probably a couple years now, and it worked great for me.?

I've also been on yaz for a few years so i think that contributed to my really nice skin. However, the last couple months I've been breaking out-it seems like I get new pimples everyday. I havn't changed my regimen or anything except that i just recently moved just outside of town and i think thats around the time my skin flared up. Any ideas?