I have 2 kids. One is 17 months and the other is 3 months. I haven't been able to lose a whole lot of weight either. But I have a friend who has a 2 1/2 year old. She had the pouch as long as I've known her (9 years) and when she went into the navy one of the exercises they made her do at boot camp really worked on flattening that area. She had to lay flat on her back, hands palm down on the floor on each side of your bottom, lift your feet about 6 inches off the floor, and hold them there as long as you can. To make it a little harder you can move your feet up and down without letting them touch the floor. It's worth a try. Trust me, you'll feel the burn in the muscles right behind that pouch. Hope this helps.
I also heard Pilates does wonders for all those trouble areas.