Hey there! Welcome!
Couple of quick things
1. It's impossible to know how many calories you burn from exercise. I wouldn't even try to figure it out. Just bank those as extra contributions towards your deficit,whatever they may be. See the sticky thread in this forum on the subject:
http://www.3fatchicks.com/forum/exer...g-methods.html.
2. Are you weighing your food? Or eyeballing/measuring it? It's awesome that you have cut way down on sugars and white carbs. I did the same thing first and the scale didn't move. It all comes down to calories- you could be eating amazingly healthy food but still TOO MUCH of it. If you are eyeballing or measuring your food, you could be overestimating by a few hundred calories a day, enough to slow or stall weight loss.
3. What do you mean by "not moving as aggressively as you'd like it"? Looks like your weight loss so far has been great!! 1-2 lbs a week is the upper end of what most folks lose, with 1-3 lbs a month very common. Are you in either of these ranges? If so, it sounds like you are right on track!
good luck