Look at all you early birds showing off that you can get up in the mornings 
(suddenly realises how ancient she is, now she doesn't have to get kids up for school)
jane I'm glad cat is back to normal, - and probably behaving as if he hadn't caused everyone a load of anxiety!- at least you'll know the first place to look if he goes walkabout again.
Stars - I second what everyone else has said, a serious illness, and everything that comes with it, can be a massive knock to your confidence. You lose trust in your body, because frankly it has let you down, and you're not sure what it may trick you with next.
Is there anyone who could keep you company on a little walk somewhere, it needn't be far, just a breath of fresh air I find that can clear my head better than anything.
And definitely don't be down on yourself, all your reactions are completely normal given your circumstances. I was similar to you, couldn't do anything to start with - I just sort of seized up, and it was before treatment started, so I wasn't feeling ill.
The counsellor I was seeing told me that human reactions to fear and danger are fight and flight, which we all know about, but also 'freeze'. So you become unable to do anything. I do think it is worth talking to the professionals about, but in my case I found little steps was the way forward. Doing one small thing each day I enjoyed, even if its just a crossword puzzle, or a book. And gradually increasing what I did. Not easy if you are feeling poorly, but its all about trying to relax and deal with each day at a time, it doesn't have to be energetic.
Sorry that was rather a long ramble - well done if you got to the end 
Hello to everyone else, loads of good thoughts to Driftwood. Dee - not sure about the gap, because I had chemo in between, but I would imagine a few weeks to let your wound heal, because the rads can make your skin sore.
Oh well, suppose I'd better clean out topsy's litter tray if no one else is going to do it..... [hwink]