Hi danya.tess,
Congrats on being a mom! One of the hardest jobs on Earth!
I recommend all types of cardio from walking, jogging, hiking, biking, Spin class, DVD's such as Taebo, Yoga Booty Ballet, P90X or the Firm! Join a local Boot Camp, if possible! The key here is to incorporate a variety of workouts, and begin really challenging yourself with increasing the intensity of each workout! If you're walking, add hills to your walk or jog for 1-2 minutes at a time. By increasing the speed, resistance or elevation of your cardio workouts, you'll begin burning more calories per session! It is important to take your heart rate into the higher realm (75%+) for a short period then you can bring it back down to recover, then do it again. Add 1-2+ minutes of jumping rope, jumping on a mini-tramp.... Whatever you're doing now, begin to increase the workload! By doing this you'll maximize your fat-burning and calorie-burning potential!
Be proud of yourself and keep up the hard work!
Best in health,
Kelli