Suggest Remedy For Pimple Scar

sir, good morning to you, I am 18 yrs old girl and had pimples on my right cheek without sensing any thing I unknowingly pinched my pimples and roughned them with rough cloth , now the problem is that instead of vanishing pimples , I noticed that there is black scar like shade on my cheek which is very ugly to see , now I am feeling bad , please suggest me any creams to cure the scar like thing , please do help me in solving the disease. thanking you , divya gayathri.