Most people with H. pylori infection will never have any signs or symptoms. It's not clear why many people don't have symptoms. But some people may be born with more resistance to the harmful effects of H. pylori. H. pylori H. pylori When signs or symptoms do occur with H. pylori infection, they are typically related to gastritis or a peptic ulcer and may include: H. pylori 
An ache or burning pain in your stomach (abdomen)
Stomach pain that may be worse when your stomach is empty
Nausea
Loss of appetite
Frequent burping
Bloating
Unintentional weight loss
