Shortness of breath could be due to many reasons, it could be either upper airway or pulmonary or cardiac reason,, owing to your age I would suggest get a through evaluation
Get your SpO2, CBP, CUE, RFT,
LFT, ECG, CHEST X RAY, FASTING
LIPID AND
THYROID PROFILE , RBS Along with BP
Next Steps
review at nearest hospital with proper personal protection