Diane,
I had fluid in several areas prior to the surgery, presumably a response to the injuries. I also had quite a bit post-op, though much less now. I don't know about hardware rejection, as I (thankfully) haven't experienced that, but it makes sense. Keep your eye on it. When is your next visit? I remember you in prayer, and hope this is a response to the trauma of the op. Take care, and keep posting!

kim