chirodana

For the last month I have been having pain right between my breasts. It almost feels like I have a cold headache in my chest. It seems sometimes to be positional, sometimes during exertion, sometimes when I eat. It comes up just as quick as it goes. Does anyone know why this is? Does anyone have a similar sensation. I have been banded since last july, had to have my port re-done due to the tube coming lose in December. Please help. I thought I was having a heart attack!:help: