Heat some water on the stove and pour it into a hot water bottle. Put the soothing heat on your stomach after you eat to help increase circulation to the abdominal area. The improved circulation should help improve digestion.
To learn more remedies that can quell stomach cramps, stimulate digestion, and help calm inflammation, see Herbal Remedies for Digestive Problems or see all of our home remedies and the conditions they treat on the Home Remedies page.
HowStuffWorks takes a look at how to safely use a neti pot.