I only lost 10 pounds two weeks after surgery....
You are probably doing everything right. If you were like me I was very sucessfull at loosing weight during my six month pre-cert diet for ins. When I did have the surgery it seemed like I hit a wall a few weeks after. What seemed to help me was adding calories. When I upped my intake It seemed to kick back in. I think my body was in starvation mode. It could just be your body catching up to itself. There have been times where the scale didn't move and my clothes still got smaller. Hang in there, it will happen for you.
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It's hard for me to give you tips when I don't know what you're doing. How much are you eating? How many grams of protein? Are you walking and/or doing some other exercise?
Fact is, at just a couple weeks after surgery, it's nearly impossible for you to be doing too much "wrong" since it's so hard to eat at that stage, unless you are sneaking gallons of ice cream. More than anything, you probably just need a bit of patience. 10 pounds in two weeks isn't yet a crisis, and could just be within the range of variation. See what your 1-month and 2-month totals are, and we'll have a better sense of where you're heading.
My tips? Try to get over 800 calories (over 1000 ASAP), under 1500, eat/drink over 80 grams of protein (over 100 if possible), take your doctor's list of vitamins and drugs, and walk and/or do other exercise if you can. If you do that, the scale's result from week to week isn't what's important, because you can have peace that you are on a path that assures success in the long run.