What are good products/solutions to use for pimples on face, chest, and back and oily skin?

I'm now 17 and never suffered from acne problems except an occasional pimple. However over the past few months my chest and back have had acne and my forehead has had raised skin colored bumps that develop into pimples. I wake up the next morning and my face is oily and throughout the day it gets oily. I've never had oily skin before.. any suggestions how i can deal or even fix my oily skin and pimples? I haven't changed any products or had dietary changes. Thanks for the help!!