Use that anger, Bevvzy, I did, and yes, I went up and down at a frantic rate to start, it has settled more now, but I can still go through all the stages.
A week after diagnosis is still raw, no wonder you are having all these feelings.
I did my research and became a lot more proactive in my care and treatment. No more relying on the experts. I never used to question things, now I do it all the time.
A grade 3 is the rate at which it grows, that probably wouldn't have changed, it is the stage that is the issue, which is how big it is and if the lymph nodes are involved.
You probably won't know what stage it is for certain until the pathology after surgery.
I hope you get a lot of help and support from your team through all this, it really helps having so many people trying to get you well again.