It's so horrible waiting isn't it - it's the absolute worst.
My mind was playing tricks on me during this period.
I know there is no way to properly take your mind off things, but I found going for walks and being active helped. Me and my mum actually walked 2 miles to the hospital to get results of my staging as we had so much nervous energy. And you know what I had some wine as well, I though s**f it - and that did help a bit too in the evenings!
Try to eat even if you don't feel like it, maybe a smoothie or something which could get some calories in you without it feeling like a heavy meal.
As BruceGirl says above, things will start to move and once you have your treatment plan it's something to focus on and plan for.
There don't tend to be drastic changes from the CT and MRI scans, mine was exactly what they thought it would be, but they need to check to make sure everything is in line and joins up.
Good luck, sending you positive vibes xxx