I am unsure what it is that you did again?
You didn't put the cancer there and I know it is a terrible thing to have.
Your husband does have a right to know as he is there for you 24x7. Maybe you didn't know how to tell him. I get it. He however needs to know as it is part of your lives whether you want it or not.
Stay strong! Get the best treatment you can. Trust in your providers.
Hugs.