That sucks! I had an umbilical hernia, too, when I was all filled up with fluid, before I was diagnosed.
When I went into surgery to get my belly tube inserted, the surgeon killed 3 birds with one stone and repaired my hernia at the same time, and also, he put a fistula in my right wrist, for hemo back-up.
I had the chest catheter in during all that, so for awhile I felt like Darth Vader, with all the tubes and doodads I was carrying.
Oh yeah, while in recovery, just after the surgeries, for some reason I started bleeding from my belly. Luckily, the nurse noticed it and called the surgeon to stitch me up. He did, but after he started he realised that my sedative had worn off and his sewing job was causing me considerable pain.
The nurse came through again with some morphine.
But don't worry, if you're just getting one procedure done at a time, an umbilical hernia is not hard to repair, at all. Does leave an interesting scar, though.
love
~LL~