<s>[INST] Hi I am experiencing a sharp cold pain stabbing pain in my chest just beaide my left breast and also the lower left part of my stomach. The pain is so much that I cant stand and even breathing makes it worse, I have been to the docs many times and they have found nothing at all. I have been experiencing this pain my whole life but it has only gotten alot worse just recently. I am 17 years old. [/INST] Thanks for your question on Chat Doctor. I can understand your situation and problem. In my opinion you are having mostly anxiety and related HERD (gastroesophageal reflux disease). But since you have left sided chest pain, better to get done ECG first to rule out cardiac cause. If ECG is normal then no need to worry much for cardiac cause. You are having anxiety and HERD. Anxiety is well known risk factor for HERD. So control of anxiety is needed. 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.  So avoid stress and tension. Be relax and calm. For HERD, start Proton pump inhibitors. Avoid hot and spicy food. Don't worry, you will be alright. </s>