Stay off the scale!
I know it is hard, but your body is trying to adjust to a severe change and weird things happen. If seeing these fluctuations are causing you stress, I truly think you should put that dang scale in the trunk of your car for a few days. No worries, you will lose weight.
My weight loss was not linear...2-4lb drops and then no change for days/weeks, then another sudden drop. I found the process fascinating so weighing daily did not cause me stress. However for many, not seeing the daily drops causes a great deal of frustration. After all, you made a surgical choice to lose weight and are barely eating, so why shouldn't you always see weight loss. But the body is a complex system and doesn't always respond the way we think it should.
By the way, I've heard these stalls come about three weeks, three months, six months, and nine months. That definitely applied to me.