what are common signs that my acne may be going away, im 18 almost 19 and the acne on my face has significantly reduced since i was 14. I had real bad facial breakouts when i was 14-17 and then it died down a lot and now i have a few pimples but i can see my facial skin is clearing up and for the most part i jst have a few scars or red marks but thats it. On the other hand, the acne on my chest, back and shoulders seem to be getting worse, i didnt have it until i was about 15 and it cleared up once for like a few months when i was 17. Now its back again and it is really bothering me a lot because it is everywhere. What should i expect from this?