You need to stop eating food for a while and be on liquid diet. First – 1-2 days Take plenty of fluids – ORS , Enerzal, Lime water with salt and sugar, Coconut water,black tea. Plenty  of soups , daal water, kala chana soup. Avoid aerated drinks. Avoid Milk. Avoid chillies and oily/fried food. Avoid all Meat products, hotel food, fast food. Avoid all fresh fruits and vegetable salads. Can drink packed juices .  2 to 3 day onwards Start on Soft diet like Rice Gurrel (Khicdi) , bread , toast, idli, oats, dalia, sheera, corn flakes and dry fruits Also you need some antibiotocs and spasmodic medicines to control your pains immediately.