Difficult to say exactly without an exam. It seems as though swelling exists around the perimeter of the umbilicus rather than in the center as would usually been seen with a hernia. With the degree of swelling visible in the photo, I would assume that this will continue to improve as it heals. If the belly button remains prominent, small revisions could be undertaken, often under local anesthesia, to anchor the belly button and improve the appearance. Give it some time, stick with your surgeon, as nothing surgically should be attempted right now. Best of luck.