I have had quad by-pass surgery about a year ago, ever since I have had pain in my chest which I have been being treated for by my doctors, and pain management doctors, but I also have had a sinus cold and cough for 6 -8 months. nothing seems to get rid of it.  I have been told by my regular doctor that it is allergies, but I have tried allergy medicines and they dont help. I have gone from 255  pounds down to 220 in about 1 1/2 months without changing my diet or exercise. What can be wrong with me?
Thanks for your question on Chat Doctor. I can understand your concern. You are having allergies, chest pain and weight loss. So we should first rule out allergic bronchitis in your case. Bronchitis can cause pleurisy and this pleurisy can cause chest pain. Bronchitis if untreated can lead to weight loss. 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 bronchodilator and inhaled corticosteroids (ICS). Don't worry, you will be alright. First diagnose yourself and then start appropriate treatment. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks