Please be the patient. If this is a fluid collection from fat necrosing or dying then it should go away but may require multiple aspirations. Also, it may be helpful to inject steroid mixed with 5 fluorouracil to further atrophy remaining fat and reduce collagen production at this early stage of healing. More than likely this will even out but it will take some attention and treatment.
the most critical thing is that he follow up with your doctor closely and follow there guidance
Chase Lay, MD
Double board-certified facial plastic surgeon