I am male and my right breast is larger/bigger than the other, why?

Gynecomastia can be asymmetric and as it is emerging can cause some discomfort. If this is the case plastic surgeon can help you.

Breast asymmetry is quite common in men and women. It is hormonal and genetic, and can be corrected with gynecomastia surgery. Please see a board certified plastic surgeon for an in-person evaluation and diagnosis.

Breast #asymmetry is the condition when both breasts are not equal in size. In men, gynecomastia can include only one or both breasts. #Unilateral gynecomastia occurs when only one breast is larger due to gynecomastia, while the other breast is typically normal in both size and shape. #Bilateral asymmetry occurs when gynecomastia is present in both breasts, although each to a different degree. The amount of glandular tissue can affect the size, shape, and location on the chest wall of the enlarged area, the size of the areolas, and protrusion and diameter of the nipples.

Unequal or unilateral gynecomastia is not an uncommon condition. It is more significant when there are very noticeable differences between the two breasts. Usually, the degree of difference between the two breasts is not severe. Through a study of his patients, however, more than 80% of male breasts are not symmetrical, but the severity varies greatly from patient to patient. Patients should take this into consideration while examining their chests prior to surgery.In addition to correcting the difference between breast sizes, the #areola often shrinks when #gynecomastia excision is performed. In more pronounced cases, the areola may even be larger. When the glandular tissue is removed, the areola #symmetry may improve.The conditions that make up #asymmetry can often be corrected to some degree. It is very individual and varies for each patient. Every prospective surgical candidate should discuss this condition with an experienced plastic surgeon prior to surgery. The plastic surgeon’s role is to educate each individual patient as to the possible degree of improvement that can be realistically achieved in his particular case. 

Many men have one breast larger than the other (so do women) this is not unusual. Depending on your age, if you are going through puberty, it is also normal to have swelling of the chest and in most cases it will resolve on its own within a few months up to a couple of years. To find out what is going on it is best you see a Board Certified Plastic Surgeon that specializes in gynecomastia for an evaluation. Good luck.

With your described symptoms it is wise to consult with a surgeon face to face.  You need evaluation and a diagnosis.  Treatment will depend on diagnosis made after evaluation.