How Can Skin Pustules With Ribs Pain Be Treated?

I just did a 28 day cleanse, lost 10 lbs. but at the end broke out like never before... large painful postules and although I still do some vegan shakes and eat clean I cannot clear my skin AND have developed a pain in my upper right side (under the last few ribs) that runs from mid body to my back... could they related and what should I do about it?