I Have Lots Of Pimples On My Face And Back

I have lots of pimples on my face and back also . littile pimples some are coming back . i dont know what to do plzz help me doctor . i am really irreted from pimples . black heads and white spots . plzz help me give me any medicen or cream name wich will help me . plzz help me docters . i havent lots of money to get tritment so plzz tell me any good scream name in low prize . plzz i am w8ting for ur answers docter