Buckeye,
I'm about a week behind you, and I have the same sensation of a "hardness" just below the above-navel incision point. At 39 days after surgery, I no longer feel a slight "twinge" of pain when I press against it, i.e., now it doesn't hurt at all, although it is still noticeable. I suspect it's just scar tissue that is still healing. When I see the surgeon for my follow-up on July 13, I'm going to ask him about it.
Greg