Facial scarring after pimples. Now.

I have never had a history of pimples but quite recently I am having breakouts that are scarring my face. Extensively. I am 25yrs old and have become slightly obese in the past 6 months due to inactive lifestyle.There is also a lot of visible white heads on my cheeks that turn into pimples with pus and reddening.I haven't have white heads or black heads related issue ever before .Neither do I go out frequently in the dust or sun .I have taken a lot of care to omit any exposure to sun ,dirt or pollution but these scarring and pimples are continuing and getting worse . On the recommendation of a doctor I had started applying retino A to the effected are but that is causing extreme dryness and peeling (but scars are getting worse) so I stopped it's use.ease suggest what to do .I feel so depressed and aboid outings due to this, this has been affecting my self confidence now.