I feel quite stressed and have done for a long time.  I have a constant tight feeling in my chest, particularly under my left breast and into my left arm pit.  A few weeks ago i was sitting talking to a friend, leaned slightly to the left side and got very sharp fluttering type pains where my heart is.  These caused me to feel very breathless and if I took in a breath the pain was worse.  the pains lasted for about 20 mins.  I had another episode the next day which lasted a few minutes.  I have had these previously once or twice.  What do you think the cause is?
Hello! Welcome and thank you for asking on Chat Doctor! I passed carefully through your question and would explain that your symptoms are not typical of any cardiac disorders. But, it is necessary to investigate for the possible causes. For this reason, I would recommend consulting with your attending physician for a physical exam and some tests: -a chest X-ray study and pulmonary function tests- a resting ECG and a cardiac ultrasound-complete blood count, PCR, ESR for inflammation-a cervical spine X-ray for a possible disc herniation, which could lead to articular nerve pain in this region- an exercise cardiac stress test, to exclude possible coronary artery disease. I would also recommend trying an anti-acid o omeprazole. If the pain is relieved BT these Chat Doctor.  Hope you will find this answer helpful! Wishing all the best,