I am feeling Chest pain on left side from last one year. In a year i counsulted many reputeded cardiologist however all telling same Costochondritis. But i feel sometimes chest discomfort and pain when deep breathe. I am not sure what it is and when i will get rid of the pain. Its really scary for me every time since its related to heart. Doctor says muscles spasm. I have produced all ECG.,CHEST X-RAY, HRCT SCAN, BLOOD TEST, LIPID PROFILE all are normal. I am not able to concentrate my daily office work due the pain. Please suggest what next i can do for proper diagnosis and proper treatment please help me.