Don't worry about it. Your body is really in shock right now and the weight is just Water retention -- part of the swelling and healing process.
I'm having two other problems, though:
1. I am totally HUNGRY! My doc said to get 600-800 calories, but there is NO WAY that I can do this on broth, tea and the 60-70 grams of Protein (in the form of clear drinks, at 60 cal/15 grams). I am so, so hungry!!!
2. I can't burp! The doc said to except to be burpy, and I often get a huge, painful sensation of needing to burp, but I can't get it to come up.
Anyone else have these problems?