thank you for your query.
your problems point towards achasia cardia.
it is a disorder of smooth muscle
motility in the esophagus
.wherein the sphincter fails to relax in face of oncoming food stimulus,which results in functional narrowing of the lower esophagus, and peristaltic failure throughout its length.
this causes the discomfort in the upper chest.since the food keeps accumulating,there is a sense of fullness..
i suggest you to get an x-ray,and complete blood picture.
kindly consult your gp for treatment of the same.
wishing you good health.