Hi & Welcome. You seem to have small stones of varying sizes 3-4 mm. Usually such stones do not cause any problem unless there is urinary obstruction or infection in the urinary tract. Precautions to prevent the stone formation: Drink plenty of water and maintain a good urine out of about 2-3 liters/day, such stones can pass easily through the urine if urine out put is increased. As far as your acidity is concerned you may take proton pump inhibitor like Pantoprazole once daily, one hour before breakfast for at least 4 weeks from your doctor. Precautions to prevent the stomach acidity issues like: 1. Avoid smoking, alcohol, stress, fatty vegan and non-vegan meals. 2. Take small portion meals preferably home cooked food, increase the intake of fruits and vegetables. 3. Do regular exercise and try to reduce your body weight (if overweight). 4. Don t sleep immediately after having meals, sleep 2-3 hrs after the meals. Hope the suggestions given above would be useful.