It must be very draining for you not knowing what is happening to your husband and needing to tell family information you just don't have at hand. I too was going to ask if you might feel comfortable phoning the Beyondblue help line.
I am also wondering if you might be able to tell one son what is going on and ask him if he can call his siblings to let them know as you are becoming quite tired with all the calls.
Is there a support worker or a chaplain at the hospital you could talk to? Just having a chat with someone and a cuppa can make a huge difference.
Are there some things you can do to help yourself feel better? Do you have a favourite meal you like to eat, favourite take away, a special place in a park to sit for a little while?
Hopefully the time with your Grandson went okay. Maybe you could do some finger painting together, make up some play dough go to a park...guess it all depends how old he is!
Not knowing what is happening can be very draining. It is good that you are able to share here how you are feeling Elizabeth, hopefully it helps. I also hope you are able to find more help right where you are too!
Hugs to you from Dools