<human>: I have a sharp pain under my left breast between the bottom of my breast and my belly button line. When I bend to the left, the pain takes my breath away but if I stretch my left arm over my head and stretch my left side by bending right, the pain eases???
<bot>: Hello! Welcome and thank you for asking on Chat Doctor! I understand your concern and would explain that your symptoms don't seem to be related to any cardiac disorders. The pain which is modulated by the body movements is characteristic of muscle skeletal disorders. So don't worry about it! It seems to be a benign disorder. I recommend consulting with your GP for a careful physical examination, a resting ECG, a chest x-ray study and some blood lab tests : - complete blood count- PCR, sedimentation rate (inflammation tests)- kidney and liver function tests-blood electrolytes cervico-thoracic column x-ray study may be necessary to exclude possible column disorders, which could be associated to your symptoms. Meanwhile, I would recommend taking some painkillers like acetaminophen or ibuprofen for the pain, for some days.  Hope to have been helpful! Best wishes, 