From my own kidney donation experience (14 years ago), and the experiences that I have read of other donors, that seems like a long time for the swelling/bloating to persist. But I don't know what effects that infection and a second surgery would have. You might want to post your question also on the FaceBook page of Living Donors on Line, as these days many more donors check in there rather than here. Please let us know how things go.
Fr. Pat