For 4 months i have ben having some sort of continously acne infections only on my right cheek. red pimples with green/white pus. whats the solution?

One sided pimples: suggest either a bacterial, as most acne is generally symmetrical to some extent. Other possible causes may be repeated friction or pressure in one area, such as leaning on your face, the phone against the face or protective gear such as helmet. I recommend getting an evaluation. A short course of oral antibiotics may make a significant difference.