There are two possibilities for pain on the right side of the belly button 15cm: First, the ascending colon location to consider the possibility of colitis, but also often may be constipation, or due to chronic diarrhea leading to gastrointestinal dysfunction, caused by intestinal cramps, irritable bowel syndrome. If you have chronic urinary tract infection or ureteral stones, you can experience pain on the right side, and you can see obvious pressure pain and percussion pain in the right kidney area during physical examination. Therefore, if you have pain in this position, it is generally recommended to improve the ultrasound examination to further clarify the diagnosis, as well as the routine urine examination and, if necessary, the colonoscopy to further assist in the diagnosis. If occult blood or red blood cells are seen in the routine urine and stool examinations, the possibility of urinary tract stones can be determined.