I've been weighing myself every day, and have seen small fluctuations like that. I freaked out a little too, then decided to let it ride. Every day isn't going to be a winning day for the scale. In fact, I should probably back off a little on the weigh-ins, might see some more dramatic progress that way. Also, each person is different in terms of how fast or slow weight loss will be. I was 307 on surgery day (12/7) and weighed in today, 2.5 weeks later, at 299. I feel like it should be faster given my starting weight, but I also realize that my metabolism right now just may not allow for rapid weight loss. I anticipate better results once I'm able to start eating "real" food in another 2.5 weeks. Just let it ride for now, keep an eye on it; it sounds like you're doing everything right but you're body just isn't ready to let go of your pounds just yet.
I was sleeved on 12/19 and was having the same worry until I re-read my preop notes again. My preop counselor advised that the last thing she wants us to do when we come home from the hospital is to weigh ourselves as we would be retaining Fluid, hydration should be our main concern - the weight loss will come if we follow our plans.
