Routine appointment after CT

Hi,

I was just wondering if you could give me some advice. I had a CT scan and got a text message the next day asking me to phone my GP any morning before11.30 to discuss results. This is the routine way to make an appointment with my GP at the moment.

I'm wondering if this is a good sign my scan was normal?  Would your doctor usually ring you immediately if there was something wrong? 
thanks

Jody