Eat more fiber or take a fiber supplement. Fiber adds bulk to your stool making it easier to pass. Change you diet. Stay away from greasy, high fat foods as well as coffee and alchohol. And, when in doubt, do not hesitate to contact your doctor.
Gas is also a big complain in the world of stomach ailments.
Gas is a natural part of your digestive process. Often caused by the air you swallow, or foods you eat. High fiber foods can create large amounts of gas in some. These foods include beans and some fruits and vegetables. Try an over the counter medication if the situation warrants.