Gina, as I read your post, the first thought that came to mind was "don't put on a strong face."
I only say this because, your transparency during this time will mean a GREAT deal to your daughters AND your husband. You can be strong while still acknowledging your situation, acknowledging your needs, and talking through your struggles with your family. My concern for myself is that I may act strong on the outside, denying my inner struggles and fears, and cause undue anxiety on myself and my family. By acknowledging my situation and talking through my feelings with my wife and children, I am able to accept their support and be an example for them when they face similar issues in their lives.
(for some reason, that didn't seem to come out as smooth as I wanted, but at the moment, I can't think of how to say that any differently).
As you have discovered, this is a great community of folks who have been there, who are supportive, and who are working through the same issues right along side of you.