This is a common reflux symptom. From what I was told by my GI, the esophagus, a muscle, experiences spasms in relation to the reflux. Chew non mint gum between and after meals, this helps not only with anxiety but saliva is alkaline and will coat teh esophagus and the stomache. Have you changed your diet? That has helped me. I almost never have heartburn but this globus feeling in my thorat comes and goes through the day. Drink a lot of water also.