Talk to Pediatric Gastroenterologist on Diarrhea, Abdomen Pain, Stool Blood

My 5-year-old son was diagnosed with diarrhea last week, and initially, he was having bowel movements 8 to 9 times per day. After the prescribed treatment, the frequency of motions has normalized to about 3 to 4 times per day. However, he still experiences occasional abdominal pain, and I have observed 2 to 3 instances where there was blood in his stool. I am concerned about these symptoms and would appreciate your opinion and guidance on the next steps to take