I often feel nauseous and have lot of burping in the morning or when I have an empty stomach, does it mean that I have too much stomach acid or too little? Sometimes, it is relieved 1/2 to 1 hour after I have eaten something, sometimes, it takes longer. Can I do something about it? Eat more often? I have 3 meals/day but I have a sensitive stomach. In addition, does anyone know if Helicobacter pylori can be detected in stool sample? If the stool sample does not have bacteria, does it mean that I have no Helicobacter pylori in my stomach?