Abdominal TB. This is!

This is regarding diagnosis of abdominal TB. She had weight loss, bloody stool,nausea and vomiting, extreme weakness. Doctor did the tests, AFB sputum didn't confirmed TB, ultrasound too was normal. Still the doctor told its abdominal TB. No colonoscopy or any other test done. Anti tuberculosis therapy started and she showed very good improvement within a month. Weight gained,no more bloody stool, haemoglobin increased from 5 to 11 and no weakness. We want to just confirm that whether ATT could work on other disease too. How the doctor made diagnosis? Was the diagnosis correct? As ultrasound was also normal. Because after completion of course ( 1 year)  she is having haematuria now. Was it any other problem. It would be great help please clear the doubt.