I have gastroesophageal reflux and one symptom is that enigmatic "lump in the throat". It can also make swallowing difficult or feel like a strangling sensation, and chronic flare-ups lead to sore throat/tongue. These symptoms may or may not be accompanied by other symptoms, which makes diagnosis a little tricky.

Stress is a HUGE trigger, and since I suffer from multiple mood disorders, I'm pretty much always stressed, ergo, the reflux is a chronic (and, for me, severe) condition.

It's something you might want to run past your doctor...it only worsens with age and complications are best avoided.

Hope you feel better soon!