hello and welcome have you tried any prescription drugs for your problem..There are various types of acne that may cause pimples but an antibiotic usually is needed in severe cases to treat any inward infection causing the outer skin reaction of acne/pimples.
Meantime watch your diet can help and fragrance free soaps like simple soap and please don,t scratch or pick any spots or pimples as this spreads infection further..Tea tree available in most pharmacy and health stores is great for its healing agents is also one too try..
good luck and keep us posted and watch for other replies.