Scales

So, I have a scale at home...I bought it when I joined WW the second time. It's a pretty nice digital scale, and it holds memory for up to 5 people. This week, as I have been working to stay on track, I have been weighing myself. This scale has shown as much as 4 pounds difference in one day...at one time, it had me 3 pounds different in 2 weighings less than 1 minute apart. I am going to have to banish the scale and rely only on the one at D's office. I'll drive myself nuts this way!