Sorry if this long winded !!

I am being investigated for a bowel problem ( I've had some weight loss , rectal bleeding etc). I am booked for a sigmoidoscopy next week but  i had a CT scan yesterday at 3.20 pm of thorax/ abdomen and received a call from the hospital today .
However no message was left and the phone number was just for the general hospital switchboard  .

I have found out from the CT department that the consultant received my results today so I think it's a bit of a coincidence that  I received a call today and assume it's from the consultant rather than an appointment change for my sigmoidoscopy  next week .

I am assuming that to get a call back within 24 hours is not going to be good news and I just wondered if anyone has had a call as quickly ? I know everyones situation is different - please don't think I am being paranoid as I have had breast cancer (DCIS) 7 years ago where I received a call with the news that I had cancer . It's Murphy's law that it's Friday today and I can't get through to anyone until Monday !!

so my question is - would a consultant normally call a patient within 24 hours with good news or only if there was a problem