Advil or Tylenol... Rub your stomach clockwise (looking downwards on it.) your intestines are formed in that manner, so rubbing it in that way eases your intestines to more easily pass any gas or contracted food. May not make the pain go away immediately but it is affective in easing pain.
Drink Ginger ale the ginger is known to settle a achy stomach & so is peppermint oil which is found in a peppermint candy & the rubbing clockwise while laying down also helps A LOT!!! In my life I very frequently get stomach aches dew to a week stomach, these are what got me thru it all! Hope it helps you too! ;)