Hello doctors, For last 1 yr, i had pricking and flashing pain (pin point only) in my left chest which disappeared in seconds. More than a pain, it's a sensation.. and very dull and mild. For safety purpose, i done ecg, echo, tmt, chest xray and blood test.. all tests are normal. 1) Is any other test require for heart investigation 2) should i worry about my heart if all tests was normal? 3) what is the reason for the pricking pain left chest? Advise pls..