I highly recommend tracking what you eat in FitDay, if you aren't doing so already. I have always eaten healthy food, but I didn't realize that my portions were too big...that's how I gained all my weight in the first place.
I also recommend measuring inches and % body fat (if you can), as you will see the changes there even when the scale doesn't budge.
As for me, I started working out 3-4 days a week, and noticed a 3 lb drop in one month...the next month, I started calorie counting (1500-1700), and had a 7 lb drop! I now eat 1400-1600 most days, and exercise 5-6 days a week, and I'm still losing.