Looking for normal

So we got some sort of good news last week about my husband's health issues. But there is still a lot we don't know.  And I wonder if I will ever feel free of this nagging feeling that I just might not be able to handle the next crisis.   And then there are days when I feel I can't breathe; that all of this fear  and hopelessness is doing damage to my own health. Is this normal? What is normal?

I know there are things that I can't control.  I know there are things I must just accept.  I also know there are things I can do, things I should do, things I might not feel like I have the energy to do.  To do the best I can is going to have to be enough.