Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have constant burps along with nausea . Well there can be many reasons for symptoms you mention in query like appendicitis , consuming foods known to cause gas in some people, such as milk products that contain lactose, broccoli , crohn’s disease , gastroenteritis , irritable bowel syndrome or urinary tract infection . If condition doesn t get well then consult gastroenterologist for proper examination . Doctor may order ultrasound , endoscopy along with stool test . Doctor may prescribe ornidazole , omeprazole , laxative , anti inflammatory along with antacids .Try to drink warm water throughout the day . I would suggest you to avoid above mentioned foods , eat light and non spicy specially at night , take light walk after every meal , take ibuprofen or acetaminophen for pain ,eat small and frequent meals . Doctor may also refer you to urologist for problem like UTI . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari