If you were happy when you thought you were 155 and you didn't change at all it just turns out you weigh more then you though you did, why does it matter? I mean you don't look any different, and if you felt fine the second before you got on the scale, you should feel fine after to, because your looks didn't change just your state of mind. Also, remember, muscle weighs more then fat, so if you felt confident before you knew the meaningless number, please stay confident!