Scale isn't budging

I don't get it our scale isn't budging. I worked out 5 days this week. Yesterday I road 6 miles on the bike and worked on my abs (the ones hiding under a lot of flubbery flab). I don't get it though because I worked out really good this week and stayed in the calories and the scale hasn't budged all week. I wish I had someone to talk to that knew something. I went to a nutritionist 2 years ago when I hit a plateau and she didn't have any insight that I hadn't read already in a magazine. We got the email ths morning showing what the lead % lost is as of this week and it was still mine 7.113% lost. Yeah!!! But it also showed that only a couple pounds seperate 10th place and 1st place so I really need to lose good numbers so that I stay in the lead. I really want to win. That would pay for our rental car in FLorida. Not to mention I would look better in my bathing suit in Florida. I don't know, Jason said I should eat more. Maybe I will try that next week and see what happens. I guess we will see tomorrow night what the number is. Wish me luck....