Suggest Treatment For Acne

well i have taken retina micro and doxycycl hyc 100mg tab about 4 years ago anf it made my acne worse so i quit, and it made me get huge blackheads on my nose and caused me to get muccus on it when i take a shower or sweat alot and it made my pores open up alot on my face and my skin is always extrmely oily and thats why my acne wont go away i also got it on my back, chest, arms, what can i do to reverse this effect?