I get the same thing, had it for years..First they said it was GERD, then it was in my head. Good one huh? Now I just deal with it, I take Tramadol, it seems to help..
I would having just gone through this go have a nuclear stress test.....it helped me..the regular stress did nothing and showed that I was fine but the Nuclear showed I had had Heart Damage...which led to a dbl bypass fast..so please don't play with it have it checked out and let me know
Good Luck