MANY women who undergo tummy tucks need to have an umbilical hernia repair performed at the same time. The reason for this is that pregnancy is generally what brings about the need for a tummy tuck and muscle plication. Pregnancy is also a common cause of an umbilical hernia. The reason is very simple-- there is only so much stretch that your abdominal wall can take before it gives a bit. A tummy tuck usually involves plication of the anterior abdominal wall from right below where your ribs meet all the way down to your pubic bone. To do this, the tissue overlying your rectus muscles, which is known as fascia, is sutured together. To repair an umbilical hernia, the fascia beneath your belly button needs to be repaired. Because both of these are fascial repairs, and the umbilical suturing is really very minor compared to the repair of your entire abdominal wall, the umbilical hernia repair really shouldn't cause you anymore pain. Also, most surgeons will inject you with a long acting local anesthetic at the time of surgery which should help you get through the first night without too much pain. I wouldn't worry about it too much.