there may be problem in digestive system, so first check your schedule as per - do regular exercise,
daily massage your body with Tila ( sesame) oil, take proper diet,milk,cows ghee regularly,fresh fruits,dry fruits,
green vegetables,protein rich food, proper sleep.
Avoid -late night work,overexertion,
excessive tea,coffee,cold drinks,chilled water,foods kept in fridge,fast food,bakery products.