Thanks for your question on Health Care Magic.
I can understand your concern.
Your symptoms like
shortness of breath,
lung pain on breathing and coughing, more in
cold nights are characteristic of
bronchitis.
So we should first rule out bronchitis in your case.
So better to
consult pulmonologist and get done clinical examination of respiratory system, PFT (Pulmonary Function Test) to rule out bronchitis.
It will also tell you about severity of the disease.
And treatment of bronchitis is based on severity.
You may need inhaled bronchodilators and inhaled corticosteroid (ICS).
Don't worry, you will be alright.
Hope I have solved your query.
I will be happy to help you further.
Wish you good health. Thanks.