my chest feels like big pressure that I can not even breath normally and I have to stop whatever I am doing, it makes me very exhausted and if I continue to exercise or move I feel very short of breath and if I bend over it gets worst and palpitations increase. Mostly on the left side sometimes even I feel my arm weird.
Thanks for your question on Chat Doctor. I can understand your concern. In my opinion, we should first rule out heart and lung diseases for your symptoms because heart diseases like arrhythmia and lung diseases like asthma and bronchitis can cause similar symptoms. So consult doctor and get done 1. ECG, 2d echo and blood pressure monitoring to rule out heart diseases. 2. Clinical examination of respiratory system and PFT (pulmonary function test) to rule out asthma and bronchitis. It all these are normal then no need to worry about major heart or lung related diseases. Sometimes, stress and anxiety can also cause similar symptoms. So avoid stress and tension, be relaxed and calm. Consult psychiatrist and get done counselling sessions. Try to identify stressor in your life and start working on its solution. You may need anxiolytic Chat Doctor.  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.