Hello, thanks for the query to HCM Forum.
is a tube through which food enter into stomach ( abdomen).
When you eat or drink something there is cough
and mucus , sometimes vomiting
from one year or so.
Trachea is a pipe or tube through which air enter into our lungs.
Esophagus and trachea have a common junction (pharynx).
In my opinion there is fold in esophagus so that when you try to eat or drink these things enters into trachea and there is cough and mucus.
So please get in an examination of esophagus and trachea by a consultant and your's problem will be solved.
Good luck. Dr HET