Need more information regarding nature of pain, exact point of origin and any investigation on the basis of which earlier doctor has mentioned swelling. Swelling in itestie is not a proper diagnosis. From you history its seeming like pain is in upper part of abdomen below chest and increases after food
Next Steps
You should take another opinion and do an upper GI endoscopy if possible
Health Tips
Avoid eating spicy food and milk products.
timely 3 times meal in small quantity
and moderate amount of water