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Thanks for contacting HCM with your health concern
1. It could be
chronic cough due to occupational factor [
Farmers Lung due to allergy to dust/mold] which nowadays is called
hypersensitivity pneumonitis, but as the history is of 2 years I will definitely recommend you to go for chest X-ray to exclude causes like Asthma, Lung Ca,
Bronchiectasis or any other parenchymal lung disease with test like lung function test, CT-chest, lung biopsy [if needed] and routine blood investigation(s)
2. Treating the underlying cause is the first management along with:
- avoidance of allergen
- avoiding exposure to irritants
- smoking cessation
- ideal weight management
PS. as you are overweight it could be due to an upper airway condition [obstructive sleep apnea]
3. If initial management is unsuccessful, referral to secondary care may be required [chest physician,ENT Specialist/Gastroenterologist]