I hear your frustration but 2.6 pounds in one week is nothing to sneeze at. I really feel that whatever we do good or bad often takes a week or so to appear on the scale. I used to yo-yo a lot when I started WW because I would have a good week and slack off some, then I'd have a bad week, etc. Or I felt like I'd work really hard but the scale didn't show it so I was frustrated. You have to look at the big picture. You can do it! I always remind myself that weight loss is a journey not a race.
Can't wait to see how you do next week and in the months to come!