It is likely that you've developed stomach ulcers which is causing this. You need ORS supplementation to maintain your electrolytes and to stay hydrated. I would advise you to visit a gastroenterologist so that you can be examined and undergo the necessary investigations to find the underlying cause and have it treated accordingly. These following steps may help: - Don't skip meals, you may not feel like eating but in such conditions you should have the reduced amount in frequent intervals(i.e. 3 square meals broken down to 5 or 6 as you can tolerate) and slowly increase as you get better. - Reduce/ Avoid spicy,fried, fatty, junk and oily food - Avoid/ Limit drinking coffee, tea and carbonated drinks to once a day - Exercise regularly - Increase daily intake of water to 3liters - Avoid/Stop smoking and drinking - Reduce stress through methods such as yoga/meditation.