Bel, please, please let it out if you feel it will give you some release.
Reading the short thread I could see that you are worried sick, both for your own health and for your Bob. Take a deep breath and as Brucie has said, try to break the fear and worry down down into smaller chunks.
Who is looking after him when you go into hospital? And, what aftercare has been put into place for you both. You will need a while to recouperate from the operation and I hope that Social Services are involved now to to help you decide on Bob's care and what care you will need post operatively.
I know it is easier said than done but try to put the thoughts of cancer out of your mind, just for now. You have enough to worry about at this moment in time. Take each day as it comes and we will all be hoping and finger crossing that the outcome of your op is a success.
Wish I could come over to 'yours' and hold your hand for a while.
My love to you
xxTinaT