It happens. It's terrible but it happens and you just gotta get with the program and lose the weight! I thought I weighed about 135-140, because last time I weighed myself that WAS what I weighed. I was completely shocked when I saw 158 on the scale. I just sat down and cried, but it made me even more determined to lose the weight!
On the brightside, at least now you did it and can move on instead of being scared to step on the scale