I'm a 31 yr old male who keeps having episodes of severe upper middle chest pain which radiates into the throat and occasionally the back. It feels like a bee is stinging me deep inside my chest and the pain radiates to the aforementioned areas... there is no squeezing or crushing but this pain tends to come on and last maybe 15 minutes to an hour then it dies out and my chest just feels like it has a lump stuck in it.. I have actually tested to see if it'd get worse and walked up 3 flights of stairs, it did not get significantly worse, but the pain is bad enough to stop me in my tracks and is disabling when it is there. The pain is quite specific and in the same place each time. No SOB, no other major symptoms. Normal stress test, chest xray, echocardiogram, SED rate 0, normal upper GI xrays...what's next?