My husband had umbiliy hernia surgery 2 weeks ago and it's still hard. is that normal?

Swelling: After an umbilical hernia repair, there is frequently swelling of the tissues that can take weeks to go away. Also, a fluid collection can form between the skin and the deeper fascia layer (the layer that gets repaired in a hernia surgery) called a seroma. A seroma is more common when mesh is used and almost always goes away on its own. Make sure you followup with your surgeon.