I’m scared that I have lung cancer

I was called by my GP today to say that a recent chest x-Ray has shown a shadow on my lung. I have an ache in my left side under my ribs and have palpitations. I’m 51, fit and healthy otherwise and thought my symptoms we’re menopause related.

I have to have a CT scan and have an agonising 2 week wait for that. 

i have a 12 year old and a 15 year old and I’m terrified that I may have to give them horrible news soon.

wondering if anyone has been through similar and could give me advice on how to get through these next two weeks?

would be very grateful. Thank you