Constant lump sensation in left side of throat, frequent burping, feels like liquids get stuck going down chest leftside, pain under left side of rib?

Get evaluated.: Anytime you feel a sense of food or fluids "sticking" at a specific place, I am concerned that there may be a narrowing in the esophagus. This may be as simple as irritation from a capsule that got stuck to something more complicated like a tumor. Needless to say, you need the information. Your doctor may refer you to a gastroenterologist, or send you for some imaging studies first. Good luck.