Hi Tammy,
It must still a big shock to you! I was diagnosed with stage 4 lung cancer in April and I don't think I have accepted it fully yet (getting there though, I hope).
Contact Cancer Council in your state. In QLD they work with some universities so I get 6 free phone sessions with a psychiatrist which I found very helpful. She taught me how to cope with my anxiety. Meditation (learning to) also helps me calm down.
Face/share your feelings (fear, anger, anxiety, sadness) is a good way to start. Just keep doing it. Write/talk to your friends, keep a journal. Observe your emotions and learn to not let them control you without suppressing them.
Hope this helps. Write to me anytime! Some days I'm off colour but I'll try to get back to you as soon as I can.
All the best. Sending you all the positive energy!
Jen