First off, welcome to FitDay and the forums! Sorry I missed your post in the food thread.
Anyway, I think you hit the nail on the head with your thoughts about the hospital stay. The usual fluid weight loss one would get when starting a new lifestyle (I don't like "diet") has already taken place for you.
I know I'll have a week or two with no loss, then sometimes a big one (and sometimes a small one) it seems to have no discernable pattern.
My advice is simply to do what you're doing--accurately track your portions and keep up your exercise. Oh, and how much water are you drinking? Within reason, the more the better.
I guarantee that if you keep up the big calorie deficit you WILL start to see some nice losses. Keep us posted!
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.