there are three chambers to the lungs and to listen to all of them efficiently-the dr has to put the stethoscope in 4 different places. once on your upper back (near your shoulder blades), once on the sides of your waist, once on your lower back and then in the front at the center of your chest which is close to your heart.
4. Constipation. This might be the most obvious reason you have a bloated stomach â you need to go to the bathroom! Constipation can cause stool to remain in the intestines, leaving you with a hard-feeling stomach, pain, discomfort and gas.
Common causes of gas and bloating include: 1  Swallowed air. If swallowed air is not burped up, it passes through the digestive tract and is released through the anus as flatus. 2  Foods and beverages. The amount of gas that different foods cause varies from person to person. 3  Lactose intolerance.