<s>[INST] My chest has been tight and its been very hard for me to breathe. Ive had a cough since Jan 1. and at times it feels as if Im coughing in vain. Ive also had a felling of being full all the time. I feels like something in my abdomen is getting bigger. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. You are having chronic cough, chest tightness and breathing difficulty. So possibility of bronchitis is more likely. So better to consult pulmonologist and get done clinical examination of respiratory system and PFT (Pulmonary Function Test).PFT will not only diagnose bronchitis, but it will also tell you about severity of the disease and treatment is based on severity only. You will mostly improve with inhaled bronchodilators (formoterol or albuterol) and inhaled corticosteroid (ICS) (budesonide or fluticasone). If you are a smoker then you should quit smoking as soon as possible.Don't worry, you will be alright with all these. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>