Don't stress to much about those dang scales. I know I too had a digital one like the pp where you put in male/female, height, and all that other stuff and it calculates it for you, maybe we just had a cheaper version but it was continusely changing numbers, I know my weight fluctuates, but not by that much!!! Try weighing yourself first thing every morning before you've eaten or done anything (except go to the bathroom lol), strip down, and try to always take your weight like that, it should be fairly accurate if you are consistant with the time and don't eat (and have no clothes on lol
) Or, just buy a better scale, that always works too hth