I am 18 years old. Does my right side of chest have gyno or both? Also my nipple on the right and left is different

Dear Rational7375,
Thank you so much for your questions and sharing your photos.
There is puffiness of the upper chest and also a mild droop of the nipple. This could be pseudo-gynaecomastia or gynaecomastia. Pseudo-gynecomastia and gynecomastia can both cause an enlargement of the male breast area, but they have different causes. The nipples can also be asymmetrical and this is also rather common and normal.
Pseudo-gynecomastia, also known as lipomastia, is caused by an accumulation of fat in the breast area. This is more commonly found in overweight or obese men, but it can also occur in men who have lost a significant amount of weight and have excess skin and fat in the chest area.
Gynecomastia, on the other hand is caused by an increase in glandular breast tissue, resulting in the enlargement of the male breast area. Gynecomastia can occur in males of any age, from infancy to adulthood, and it can be caused by a variety of factors, including hormonal imbalances, medication use, and underlying medical conditions.
While both conditions can cause emotional distress and self-consciousness for those affected, the treatment options may differ. Treatment for pseudo-gynecomastia may involve weight loss and exercise, liposuction, or other surgical options to remove excess fat. Treatment for gynecomastia will require surgery specifically to remove excess glandular tissue e.g. the MELT technique which we have described in our publication in 2018 . Please click on the link below for more details.
Hope this answers your questions!
All the best!

After carefully examining your images, it appears that you are an excellent candidate for gynecomastia surgery. You do appear to have excess fat and breast tissue, as well as an asymmetry in regard to your nipple placement with your right nipple being higher than your left; however, the photos are not ideal so it would be most helpful to examine you in person. I often perform gynecomastia surgery my New York City office with great patient satisfaction and success. Rather than placing an incision on your nipple/areola complex, I prefer to access the fat and excess male breast tissue via a small port located near your underarm. The results are excellent without any noticeable signs of your having had surgery. 

Thank you for your question and for submitting photos. It appears you may have gynecomastia or pseudogynecomastia on both sides. An in person examination with a board certified plastic surgeon is required to properly assess how much glandular tissue is present. Gynecomastia surgery removes the glandular tissue permanently while  liposuction helps to further sculpt the chest. Hope this helps.