I have a few real concerns here, and am dismayed at how many responses you have, and no one has mentioned these.
First, you need to find out why you have the swelling a pain in the legs. There are some things like protien malnutrition, which some of us do get, and it serious. The other things that come to mind are also serious, so rather than guessing here, get FULL labs done, like the list that Vitalady suggests, and it can take over 20 vials of blood for those. If you've recently had labs and not that much was drawn, they WEREN'T COMPLETE. Basic labs will not be even close to enough.
Second, there are only a few doctors that can revise from a RNY to DS ( and yes, you say you have the sleeve, which is the same stomach as the DS). Patching the RNlY pouch back together into a stomach that the sleeve can then be made into is not something most surgeons can do, and yours isn't on that short list.
So, the fact that you are not losing weight would be secondary to what my real concerns would be. You have issues that look like they could be seroius signs of malnutrition, and you don't have a surgeon that has been known to reverse RNYs. Those both make me think you don't "just" have a sleeve. Not as concerning as the fact you are showing signs of something or things that may be serious.
So I wouldn't worry about the weight as it may just be water retained because of other issues - it's those other issues that sound potentially serious.