Hi well come to HealthcareMagic
Yes in 9 months you were gained weight around 20 kgs. it is may be because of change in food habits, lack of exercise, and because of thyroid
problem. For your conformation get it done thyroid tests.
Avoid: junk foods, chocolates, ice creams, sweets, carbonated beverages, alcohols, ghee, butter, Paneer, egg yolk,
Include: Salad, green leafy vegetables, Skimmed milk & curd, egg white, try to have more vegetables, fruits,
Exercise: Daily 30 minutes brisk walk. Some basic exercise like arm, abdominal exercise
for 30 minutes.