13. Heartburn, Nausea, and Vomiting

Having trouble keeping the food you eat down? If you’re having constant heartburn and indigestion which feels similar to an ulcer (but isn’t), you could have stomach cancer. Patients with stomach cancer also have a loss of appetite, feel full with smaller meals, and experience nausea and vomiting. Heartburn could also be an early symptom of throat or ovarian cancers as well.