Can i tell me how i can know i have gynecomastia?

Gynecomastia is: Enlargement of breast tissue in a male. Breast tissue has different consistency than fat. It is harder and more nodular than fat tissue. You probably cannot tell the difference, so best to show it to a surgeon.

Physical Examination: Gynecomastia comes from the greek meaning "gyne" meaning woman and "mastos" meaning breasts. It refers to abnormal development of large mammary glands in males. The diagnosis can be made by physical examination where relatively firm tissue (breast gland tissue) can be differentiated from relatively soft tissue (adipose tissue).