Hi, San.
I would get started with these 5 tips to fat loss. Then I would serioulsy get on some sort of program. Following a program will really help you with focus, guidance and motivation.
1) Eat 5-6 small meals throughout the day. Each meal should be 2-3 hours apart. Each meal should contain one protein and one carb. The first meal should be eaten within an hour after waking.
2) Drink lots of water
3) Rest properly. This means taking at least 24-48 hours between strength training the same muscles, and it also means getting at least 7-8 hours of sleep per night. Lastly, it means taking 1-2 days off from exercising per week.
4) Cardio. This should be done at different intensity levels and different session lengths. Consider doing a low intensity/long session, a high intensity/short session and a few medium intensity/medium length sessions.
5) Strength Training. Strength train each muscle 1-3 times per week. You should lift a proper weight and perform the proper amount of sets/reps for your strength training method. If you need more guidance or exercise ideas you can head over
All of the above things combined will result in fat loss. No one can help you lose fat. That's up to you. So get excited and know you CAN do this. Besides you want to be fit, fab and healthy for your child, right? So get serious about things and then do it!

Best of luck to you!!