I have gone many days, even weeks, without losing weight during fasts, and have even gained a pound or two a couple of times. It's very discouraging and begins to take away from the whole fasting experience. What I've learned is to not let weightloss be the determining factor. Fasting is about healing. And as pepe said, you're body will do what it needs to do and in the order it needs to do it.
I am curious why you're taking in salt, though? When it comes to fasting, I admit, I'm a bit of a purist but I've never heard or read of taking in any type of salt for any reason. Also, lax tea can tend to dehydrate you so perhaps your body is just storing the water it needs after the lax tea has drawn it out...