From the last 2-3 months i am facing stomach issues such as gas trouble,burping and bloating. Sometimes i get some discomfortness and little pain in left chest conitinuing with discomfortness in left hand and left jaw. So i did ECG doctor said your ECG is normal no issue with the heart doctor said for my confirmatory you can go for TMT which also is normal and test is negative. But still have gas trouble, feeling like something stuck in left throat, left jaw discomfortness and i am getting a feeling of heart attack. Now no chest pain and no arm pain only discomfortness in jaw and left hand. Please guide me in this regard. Whether it is a stomach problem or any serious disease?.