I'm not too familiar with this site and the calorie counter.. if I don't know the calorie count off hand I generally go to calorieking.com or my all time favourite, sparkpeople.com (requires registration but has a good calorie counter/diary).

Google "plateau" and the recommendations of overcoming one. It is often recommended to mix up your current routine (calorie intake / exercises) to help overcome it. Best of luck!

congratulations on the weight loss! as mentioned, muscle is much heavier than fat, so that is a consideration. It is also important to remember that some people overestimate how many calories they are burning while doing exercise, so they end up eating more. Therefore, make sure to track everything that you're eating, even while doing heavy exercise! Also, use a tape measure to take your measurements around your neck, chest, waist, hips, and thighs. Take these measurements every four weeks or so.. it will give you a better representation than the scale. If you can afford it, a scale which weighs water/muscle/fat weight is also a great investment because you can see where you are gaining/losing weight. They are usually about 30$ for an inexpensive one and available at most stores.