Hi welcome ma- you need very low fat diet withhigh activities ,which you can manage even at home. do 2-3 kms brisk walking with skipping, also some fat buring poses .ie. yogas 2 -3 times ,Muat early morning & eveing & at bed time. be more dynamic even at your daily life & cut down all fats .junk/cola.high calorie all foods.
I understand your concern. I second with Dr. Harisha's opinion. But abdominal obesity leads to lot of problems in the long run. So, you need to start doing pelvic floor n abdominal exercises right away, with a combination of diets which comprises of lot of fibers, proteins, good fats n carbs.
Follow this as thumb rule to keep your total food intake 50% raw n 50% cooked. Raw food includes fruit, salads, sprouts n nuts. Cooked are proteins like dal, soya, Chana, eggs, fish meats, dairy products and cereals like oats, whole wheat roti, brown rice. This will help you to manage your health on right way.
Weight gain happens either due to addition of extra calories or due to failure to spend calories consumed...these extra calories deposited in our body as fat..for weight reduction you have to consume less calories and spend more...avoid junk foods,carbohydrates like rice etc,avoid oily foods...add proteins and fibre rich foods to your diet with green tea,green leafy vegetables, fruits...do regular exercise at least 2 hours a day...regards.