If you’re not fat but your belly area is visibly swollen, it is because of bloating in your stomach area that happens because of gas caused by poor digestion.
Many people generally ignore gas problem but is is easily curable at home if you take action on right time
Take a glass of water. Add few slices of ginger root and boil it on low flame for few minutes. Just filter this water and drink it as you drink regular tea.
Apart from that you can also sprinkle some ginger on top of your food.