Continue your Zofran. Take pyridoxine B6 25 mg 3 times a day every day and Unisom 12.5 mg every 6 -8 hours for nausea and Ginger 500 mg every 8 hours. Eat small frequent meals. Stay on high potassium diet. Take thaimine 50 mg every day since you have had symptoms more that 3 weeks. Eat simple carbohydrates and foods low in fat and not spicy.