Hi and welcome to the forum! I am glad that I can help you.
You want to know the cause of the symptoms that you experience.
Food begins to be processed in the mouth. In the stomach (gaster) the food is mixed and liquid. As the stomach mixes the food peristalsis begin to appear from the gaster down the intestines. It usually goes segment by segment. Sometimes the food exerts pressure over the intestinal muscles, distends them and causes pain. The pain is emphasized with the contraction of the muscles as the peristalsis wave continues.
Given the data that you described, you may or may not experience any medical conditions. You may consider seeing your doctor if you experience severe pain combined with intestinal bleeding, diarrhea or constipation.
Please keep in mind that I provide medical information only. I am not able to diagnose medical conditions online. Please contact your doctor for further advice and information about diagnosis and treatment options.
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