What Could Be Causing My Son’s Two-week Rectal And Lower Abdominal Pain, Especially During Bowel Movements?

yes, it is my son he is having rectal pain esp with BM the pain extends to his lower abdomen he has pain all the time but excruciating with BM this has been going on for 2 weeks we were at urgent care last week but no rectal exam and no labs they told him he was constipated