Welcome to HCM,
your weight is about 10-12 kg more and at this age you require to reduce the wight.
First rule out thyroid
Take less fat and carbohydrate
drinks,ice creams and taking frequent tea and coffee as this will give you some more calories.
Take high protein diet.green veggies and fresh fruits and juices.
Go for regular exercise like walking,swimming daily 30-40 mint for 5 days in a week.
Quit sedentary life.
Ok and bye.