I am so sorry you are having to go through this. I know I was very scared and confused when first diagnosed.
That's a normal reaction in a situation like this. It sounds like you are taking the best focus. While you wait, I would write down a list of all the questions you have . That helps reduce your stress and also makes sure you don't forget anything to ask them. Ask your husband his questions as well.
I also found taking someone into the appointment with you can help as they can take notes for you about specific directions etc. It's easy to get overwhelmed during big appointments like that.
Eat well, stay hydrated, sleep 8 hrs at least and get exercise you can do.
Ground yourself with things you enjoy doing, outside in the sun etc. Connect with your faith foundation.
My Sage words ?? ...
My cancer has taught me to live ... to be present in every moment. Each moment is lived as fully as I can
Wishing you the best and praying for you