Stomach cancer can be difficult to recognize in its early stages because the initial symptoms are vague and can be mistaken for other less serious conditions. However, if you experience any of the following signs and symptoms that persist or worsen, you should see a doctor:

• Trouble swallowing
• Belly pain
• Feeling bloated after eating
• Feeling full after eating small amounts of food
• Not feeling hungry when you would expect to be hungry
• Heartburn
• Indigestion
• Nausea
• Vomiting
• Losing weight without trying
• Feeling very tired
• Stools that look black

It is important to note that most of these symptoms are more likely to be caused by things other than stomach cancer, such as a viral infection or an ulcer. However, if you have any of these problems, especially if they don’t go away or get worse, you should see a doctor so the cause can be found and treated, if needed.