Your symptom may be a fraction that makes up a disorder called Gastro-esophageal Reflux Disease (GERD). When the esophageal sphincter (a muscular "band" that prevents gastric juices from oozing up into the esophagus) is not working properly, the acid in the stomach is no longer contained, thus creeping upwards where it should not be. If you are consuming too much carbonated drinks (like soda), spicy foods, and alcohol, then try to lessen your consumption--better yet, stop completely, in order to isolate the causes). Excessive acidity in the stomach may lead to GERD, also, having too much stomach acidity may also result in more serious complications like stomach ulceration. Another factor that would support the notion GERD would be a burning sensation in the chest, or "heart burn".