Nausea, HeadacheChest Pain. Solution.

Two years ago my mother had following symptoms: Nausea or uneasy feeling, Chest pain on right side also pain behind shoulder blades and back right side, Head ache with slight dizziness, excessive gas, no vomiting. Blood pressure was 160-89, Heart beat 90, We did ECG test, chest x-ray, Heart 2d echo test, stress test. All test normal as per our family physician. Sonography of stomach did show a 6 mm gallstone. My mother has diabetes, so she takes metmorphin half tablet a day. Blood test are also are normal, only slight high cholesterol. Doctor suggested tablets for acidity, but now above symptoms have gone but there are other problems like she has headache and cannot feel like eating, so if not eating on time she has weakness. Please provide solution.