feeling frightened

yesterday i had my scan and they have found a small lump- i hadnt felt a thing and it was found in a routine check. There's some other areas they're analysing too( calcium deposits) Im waiting for confirmation that it is cancer, but theyve intimated its highly probable. My nurse said its early, its small but i am terrified.  All i can think of is leaving my children without a mum and this spreading everywhere.