Hello, I can understand your concern for pimples medically known as Acne vulgaris . First and foremost you should not be depressed for the age and youth related problem which most us encounter in young age. You require a proper and good follow up with the doctor. You have not told us your age and sex so that a better of the idea could be got to help you out best. Your doctor has provided good medications but you require to use these regularly. Retino AC is good cream and contains tretinoin which is a vitamin A ester and gives long term relief in treating acne. You should apply it night time win a very thin layer. Initially it can give bit irritation but once adjusted in 4 weeks would be giving long lasting results. All the best.