Hi Doctor, My Son Is 3.5 Year Old. He Told

Hi Doctor, My Son is 3.5 year old. He told us for stomach ache and we consulted with a doctor and after taken the medicine, he was ok. but he is again suffering from stomach ache since last one month. we consulted from the doctor and he suggested us for Ultrasound and after seeing the report, doctor is too casual and says there is no problem. but I need to consul with a Gastro. How can I send you the Ultrasound report.
Pls help.