One Week until Surgeon's consult

Then we schedule surgery. I am both excited and nervous. I am most scared of gaining weight before the surgery. I have edema so me swelling up 10 lbs in a day is nothing and usually no apparent cause. This is day 4 without a soft drink and no caffeine. I don't really miss it but I notice I am more thirsty now that I am drinking the bottled water that I put a sugar free flavor packet in. I really don't understand why I am more thirsty. I haven't really lost any weight and frankly sometimes it is hard to tell when I swell up.