My skin has not retracted post MBR and I feel burning sensation on my right chest, what could be the cause? (Photos)

There are many reasons to have puffiness of the chest/nipple and pain after gynecomastia surgery.  It is possible to have a neuroma, organized seroma, persistent fat necrosis, and scarring.  A plastic surgeon can perform a physical exam and determine what is best for you.  This may involve redo gynecomastia surgery to break up the scarring.  30% of my gynecomastia practice is redo surgery and unfortunately I see many patients who still have persistent gland after the surgery was done else wear.