To weigh or not to weigh

I have been dreading this visit to scale since I was not very disciplined this week. Lots of work usually means less time for home meals and exercise and more late night eating so after breaking the 20 pound loss plateau last week. I am sad to report I am up by 2.6 pounds in the last 7 days so my total is now back to 18 pounds. Maybe there is something to this weight training theory. Hmmm...