Having faced cancer and a life-threatening accident I would give you this advice fwiw:

Remember that your body itself is always managing itself towards wellness and balance on all fronts. We help it along by acting on medical advice.
But it is still a process that takes *time* and has its moments of crisis - physical and mental.
However the *direction* is always towards health and wholeness.

I think it is very important to try and keep as calm as possible (not always easy) and to concentrate on positive and beautiful things.
And keep an eye out for those wonderful moments that are all the time there in our life but we don't always pay them particular (enough) attention eg sunrises, sunsets, small acts of kindness that we receive, see or even hear about (like at the very end of the tv news).

Thinking of you...