Hi so my 6yr old has been having tummy problems for a while now, showing classic signs of crohns and a fistula, but has had many tests including MRI and colonoscopy and no sign can be found, has anyone else experianced this please, im going insane as to what the cause can be, even the doctors are baffled at the lack of findings with all the symptoms, this is my first time on here so hope this is ok xxx