If your surgeon truly promised you that you would not have any marks above you belly button, then you have a legitimate concern that you should ask your surgeon about. But most surgeons rarely make such promises as the sometimes cannot be kept. If your contours are great, then focus on your healing. If you have lots of redundant skin still, a revision may be in your future. Without photos, this is simply speculation. But its always better to discuss such concerns with your surgeon, whom you entrusted your care to and whom you selected from the many that are out there. And your surgeon should wan the best results for you too.