bloating after eating (sometimes), upset
stomach (often, especially after coffee), stomach pain pretty much right between the breastbone and navel, heartburn (frequently but not always), lack of appetite (sometimes), and belching (frequently). Sometimes the pain is relieved by eating, sometimes it's made worse. Over the past 3-4 months I've had two episodes of burping acid back into my mouth but I don't know if that's related or not.