You could be having some digestive problems. When you don’t feel like eating and your mouth waters more than usual as well as feeling that you have phlegm in your throat; it might mean that there is heartburn or indigestion. These conditions can cause discomfort when one eats food. To relieve the symptoms, attempt to eat small but frequent meals throughout the day; avoid spicy or greasy foods, and ensure that your body remains hydrated at all times. If these signs persist then seek medical attention from a gastroenterologist for further diagnosis as well as treatment options.