AFTER EATING A SMALL DISH OF CHILI (WITH KIDNEY BEANS), I GOT SUDDEN ACHING PAIN ON THE UPPER RIGHT SIDE OF MY CHEST, ESP. WHERE MY ARM AND CHEST MEET. SOMETIMES THERE IS STABBING PAIN, ESP. WHEN I TAKE A DEEP BREATH. IT SOMTIMES GOES INTO MY NECK & JAW BRIEFLY, OR AROUNG TO MY BACK. I'VE HAD IT ABOUT 17 HRS NOW. I DRANK COKE AND LATER GINGER ALE, AND TOOK 2 GAS-X TABLETS (ALL AT VARYING TIMES), BUT CAN'T GET ANY RELIEF. I'M A 59 YR OLD FEMALE, IN GOOD SHAPE (I EXERCISE AND LEAD A FAIRLY ACTIVE LIFESTYLE). IS IT GAS, OR SOMETHING MORE SERIOUS?