** Thanks for contacting with your health concern 1. Since I m unable to examine you directly and also you haven t shared any reports/test, thus for me possible cause could be i. APD [acid peptic disorder] due to gastritis and since notable points are mentioned: - pain and vomiting after food. - loss of weight/weaken, thus could probably be a gastric ulcer. 2. Symptom wise approach, in such case/history, should be; a. Dietary Regimen . Take light diet, pea soup, rice gruel, coconut water, vada made from black gram, jaggery with ghevar, regular sleep and adequate rest . Avoid heavy, spicy, dry food, sour fruits, fish, alcohol, horse gram, late nights, fasting, painkillers, mental tension. . Mix 4 spoons of pumpkin juice with 1 spoon sugar candy powder and drink for 1 month, or eat radish with sugar candy for 1 month b. If the pain is not relieved completely, ask for investigations like: - Gastroscopy - Barium meal [if gastroscopy is not available] - Stool examination - Gastric analysis [if gastroscopy is normal] - H.Pylori in gastroscopic aspirations, if present advise triple therapy PS. A gastric ulcer is potentially malignant, so biopsy and follow up with Gastroscopy is very essential.