23\f what causes dry throat, phlegm feeling in throat after eating greasy food, and burping excessively? very worried thank you.

Possible gerd: Your symptoms could be from acid reflux or gallbladder issues. Are you having any pain in your right upper quadrant of your abdomen? If so it is likely related to gallbladder etiology. Recommend low fat diet and follow up with your physician if it continues.

Probably GERD: see your doctor for an examination, an anti GERD diet and medication if necessary