pat
i've had the same pain for years..i've had ultrasounds and nothing shows up..the pain is unbearable..middle of the chest thru to the back and twisting upward to the neck...i finally kept a diary as to when they were occuring...and almost every time i had eaten corn or popcorn especially..or anything fatty would set them off...my doctor said i was having gallbladder spasms..i also have medication which heads it off at the pass if i feel one coming on...but by watching the diet i've been able to almost eliminate them.. Check your foods....