Although, pain can arise from the tissues of the abdominal wall that surrounds the abdominal cavity (such as the skin and the muscles), the term abdominal pain generally is used to describe discomfort originating from organs within the abdominal cavity. Organs of the abdomen include the stomach, small intestine, colon, liver, gallbladder, spleen, and pancreas.

Occasionally, pain may be felt in the belly even though it is arising from organs that are close to, but not within, the abdominal cavity, for example, conditions of the lower lungs, the kidneys, and the uterus or ovaries. On the other hand, it also is possible for pain from organs within the belly to be felt outside of it. For example, the pain of pancreatic inflammation may be felt in the back. These latter types of pain are described as "referred” because it does not originate in the location that it is felt. Rather, the cause is located away from where it is felt (i.e., it is referred to as a different area).
What Causes Abdominal Pain?
Swallowing excess air, eating high-fat foods that delay stomach emptying, and even stress can contribute to abdominal bloating and lower abdominal pain.

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One common cause of abdominal pain from coughing is muscle strain. When you cough forcefully or repeatedly, it puts stress on the muscles in your abdomen, leading to discomfort or even injury. This is especially true if you have a chronic cough due to conditions like asthma, bronchitis, or COPD. Pain in Lower Abdomen From Coughing