I have been experiencing shortness of breath more frequently lately and excessive sweating even when Im just sitting around.  I am a 40 y/o/f, smoke approx 3/4 pack a day, and recently (since February) started working out and running.  For the last 2 weeks, on top of these symptoms, I have been extremely tired to the point that I dont feel like working out or doing anything.  This afternoon I took a nap.  I was woke up in the middle of my nap feeling like I was suffocating.  I just couldnt catch my breath.  I sat in front of a fan coughing and trying to breathe.  Since then I still continue to feel like I cant take a deep breath, Im having heart palpitations, and at times have what I think are chest pains.  Sometimes theyre sharp and sometimes it just feels like someone is squeezing my chest.  Also for the last few days when I breathe, it sounds like I have bubbles when breathing.  What could these symptoms mean and should I go to the ED tonight or wait to see my family doctor tomorrow?
Thanks for your question on Chat Doctor. I can understand your concern. Since you are a active smoker, we must rule out heart diseases like Coronary artery disease (CAD) and lung disease like bronchitis in your case for your symptoms. So immediately consult emergency room and get done 1. ECG and 2d echo to rule out heart diseases. 2. Clinical examination of respiratory system and PFT (pulmonary function test) for the diagnosis of bronchitis. You will need cardiac supportive Chat Doctor.  In any case, smoking cessation should be done first. So don't wait at home, immediately consult ER and start appropriate treatment. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.