I firmly believe I have a reliable scale. I've been through several scales in my lifetime. However, whenever I go to the doctor and am weighed on their scale, I am always heavier. For example, I went to the doctor's on Thursday and weighed 3 lbs heavier than I do at home. Granted, I know if I were truly at my goal weight, 3 lbs wouldn't mean much to me. But I'm trying to keep positive here and seeing a gain really made me upset.
Does anyone else experience this?

all those little things can add up 

