Hello! I've had heart burn for 5 days now. I don't have to eat anything to get it. Burning sensation behind my rib cage as well as the throat. Feels better after having baking soda water. Yesterday, it felt a lot better but now my lower sternum is so sore it feels like someone punched me in my sleep. I could not sleep for the life of me last night and pain continues in that area this morning. Is this a cause for concern or will it go away on its own? Thank you for your time!