Hello, The vagus nerve does not sound to be responsible for such presentation rather than inflammatory bowel condition with digestive enzymes and gut flora disturbances is the key factor likely to be involved here. Better to consult gastro enterologist for the best review and results rather than loosing time and worrying. Best methods for primary adoption of better result oriented strategy would be - strict diet control with bland, vegan diet - plenty of liquids - primary prescription of anti emetic as ondansetron, PPI as omeprazole from your PCP - avoid stress, anxiety - no smoking or alcohol consumption if doing - pre and probiotics are very key role players in such cases. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon