Too early to judge results even three months after gynecomastia excision.
From the photographs I don't see anything terribly worrisome. At three-month there is still swelling after gynecomastia excision and further changes can be anticipated.
Possible seroma after gynecomastia surgery
It is possible that you have a seroma or collection of fluid under the skin. You should be examined by your plastic surgeon. If it is a seroma is can be needle aspirated.
Probably a lot of swelling underneath areola. May take a while to subside if that is the case. Best to follow closely with your surgeon.
Results look pretty good, I would inject some steroid and start super aggressive massage to break down and slow down the scarring