Hi You seem to be having physiological acne.  This acne is due to underlying hormonal or lifestyle issues and is common at your age. Use a ph balanced salicylic acid face wash twice a day for three weeks.  Try application of clindoxyl gel at bedtime.  Please avoid junk foods and smoking.  Exercise regularly and drink plenty of water.  Avoid picking at your pimples to minimise the risk of scarring.  If not better then you need oral antibiotics as well as retinoids to help you.