One of the major side affects of the tummy tuck is swelling. I tell my patients to expect this. It's a nuisance, but it's predictable and normal. Usually you will not be able to wear the pants or jeans that you can pre-operatively until about a month after surgery. Another month later they will start to get loose. Starting around two to three months, you will find that you stomach looks great first thing in the morning, but by the end of the day the lower abdomen is swollen. And this can take up to six months to completely resolve.
Certain things can help to a degree, like avoiding salt and wearing a binder most of the time. But this will not prevent swelling. Ceratinly diuretics are to be avoided (unless you normally take them to manage high blood pressure). But in terms of compression, we have found Spanx® to be of great help starting about two to three weeks after surgery.
Swelling is part of the body's response to injury, and surgery is a controlled injury. It's normal, and it's how we heal. So, as aggravating as it is, you will need to accept it and understand that it will eventually go away. But there isn't much we can do to speed the process up.
All the best,
David B.