People may experience abdominal symptoms with stomach cancer, such as stomach pain or discomfort, and can feel full after eating only a little. They may also feel nauseous.
A person may feel more tired than usual with stomach cancer. People with stomach cancer may have anemia due to a low red blood cell count, which can cause fatigue, weakness, and shortness of breath.
Cancer causes changes in the body that can cause people to feel very tired, even after resting. The worry of cancer may also cause people to feel fatigued.