from your symptoms that you have described, you could just have an allergy
to dust and cold that could be leading you to have the symptoms.
cancer also has to be ruled with other infection like bronchitis
, copd, aspergilosis, asthma
also need to be ruled out,
i would suggest you get chest xray done, barium studies to rule out any kind of mass in the esophagus
i would suggest get reviewed by the physician for further investigations and treatment
get well soon and take care.