This may be a sign that you are detoxing. You said you have been eating less fast food and more fruits/veggies and drinking more water. Maybe your organs are getting cleaned out by the healthier foods and more water. You may want to do a Colon Cleanse if this is true. If your organs are detoxing and your colon is backed up then your body is trying to eliminate the bad stuff through your skin instead of out of the colon like it is supposed to. I would suggest keeping the healthy Diet as it is better for you. Do a colon/parasite, kidney & Liver Flush in that order. There is info on this site for all 3. Just an idea, hope it helps.