<s>[INST] Sometimes when I wake up the back of my lungs feel a little bruised and Ive found this to be more often after cold nights. Sometimes I also have a short period of shortness of breath however that also isnt frequent and comes at random times. And even more rare I have a sharp jab in my lungs where I have to breathe really shallowly to stop the pain which only lasts for a few moments. [/INST] Thanks for your question on Chat Doctor. 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, PUT (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. </s>