One thing you have to accept is that after having a baby our bodies change. NOt always for the worse, but they definitely change. Our hips may be a bit wider, we may hold fat in different places than before etc etc. With that said, I would suggest finding a regular exercise that you love. Join a gym or find a dance class etc.
Also Weight Watchers is great for eating healthy and losing weight. I did Weight Watcher online only and lost 37 lbs, I've kept about 35 lbs off and it's been almost 2 years.
Good luck, I'm sure you will find something that works for you!