Lots of pimples and blackheads, and i never got them before..help!?

i never used to get pimples or blackheads on my cheeks before, and i used to eat TONS of junk food. a year after i stopped eating junk food i started getting them and its getting worse and worse. i dont eat any fried foods, i drink lots of water and i exercise, what should i do to make it stop? and how should i get rid of the scars? (please, no face creams only natural remedies.)Lots of pimples and blackheads, and i never got them before..help!?
1.puberty


2. dirt, oil, and sweat combined together in your face


3. stress

alvinarf