I'm sending positive thoughts your way.
Actually my family is going through very much the same thing that you are.
Just last night I heard that my sister-in-law who is just 40 went to the hospital on Friday night.
It turns out that she also had a heart attack.
My parents have been helping my brother this weekend with their 3 daughters who are very young(2 1/2 yrs and 5 month old twins).
Her parents will be flying in to help with the kids tomorrow.
Hopefully she will be out of the hospital in 4 to 7 days.
I hope your husband is back home with you and your daughters soon too.
Take care of yourself too, I know it's hard but you will get through this.
( I seem to remember hearing that you are pregnant so try not to get too stressed out yourself.)