What's the Cause?

Help! I really don't know what is wrong with me. I am experiencing acne breakouts like never before. I have been keeping my face clean as usual, applying the usual creams and such. But it doesn't seem to be helping. As I am writing this, I have a few small ones on my cheek and chin BUT a huge gigantic mutant by my nose. It's rather unsightly. Why is this happening? Is it because of stress? Not drinking enough water? Or the "heaty" foods that I've been advised to take? If my face doesn't clear soon, I will need to resort to dermatologist acne treatments to rid this nuisance!