Hi so about 4 weeks ago my son had green stools and very bad pain , this passed. Then we got covid and he had diorhea all back to normal butane nighg and this morning he had blood in his stool. I've spoken to the dr who has made him a appointment for Friday. Does anyone know what to expect at the appointment to prepare my son ? I'm hoping it's fro. Straining buy then he wasn't when it actually happened.