Clinical examination is must in your case...with out examination it's hard to suggest if it's gynecomastia avoid junk foods,carbohydrates like rice etc,avoid oily foods...add proteins and fibre rich foods to your diet with green tea,green leafy vegetables, fruits...do regular exercise at least 2 hours a day....Medications used to treat breast cancer and other conditions, such as tamoxifen and raloxifene may be helpful for some men with gynecomastia....if no improvements to medications you can go for surgery....consult nearest surgeon they will guide you further.