Thoughts on Exercise, Healthy Eating, and Weight Loss

After having Alex (17 months ago), I weighed 10 lbs over what I weighed before I got pregnant. I wanted to lose it, but I didn't actively do anything other than exercise here and there and try not to eat too many sweets. I lost some weight, probably from the extra calories I burned pumping milk (do you burn as much pumping as you do nursing?), so that I was only 5 lbs overweight. Then I decided I really wanted to get back to my pre-pregnancy weight, and for that matter, I'd like to lose 10 to 15 lbs more.