Is It Normal for Fat Grafting or Transfer to Be Puffy and Hard?

During lipo on my stomach, the Dr. made a small dimple or dip and dedcided to fix it by injecting some fat back into that area. He stated he needed to over stuff a little since it does not all stay. It has been 1 week and that spot is puffy and pretty hard or firm underneath. I do not think it is swelling, I think it is too much fat. Will it still go down and soften up or does it sound like he will have to re lipo that area? how long before he can do it, I can not go go months with this bulge...