i have gas, and it now feels like it has gone through to my neck and back and is very difficult to pass, i am having jaw pain also . eventually the gas pains do subside, and all these symptoms go away, but meanwhile are very painful. and also ongoing- fullness, lose of appetite and indigestion have increased in the past year. i have taken nexum and prilosec, but not regimented. (i forget to take them until its to late) coffee frinker yes, smoker yes.