A tummy tuck, though given a cute little name, is major surgery. Major surgery comes with a significant amount of swelling afterwards. Though this swelling can be quite pronounced, it won't adversely affect your final outcome. My only concern, not having the benefit of photos or an exam, is that the swelling you are referring may be a collection of fluid (blood or serous fluid) between the skin and abdominal wall. If that is the case, it may require the attention of your surgeon. So, if you have seen your surgeon and these issues have been ruled out, then you shouldn't worry about a large degree of swelling after tummy tuck. The majority of it will resolve within a couple of months, and it should be completely gone at six months. If you have been advised to wear an abdominal binder or other compression garment, doing so may help limit the extent and duration of the swelling. Best of luck.