Sorry - I managed to cross post with everyone due to very slow typing 
LJ - I think you are allowed to go to the loo IIRC (I might be wrong, my memory's not all it should be!) The injection for the bone scan I don't remember as being particularly awful.
For one of the scans DH and I got sent of for an hour or so to have a coffee etc. while something took effect - that might have been the bone scan injection. (sorry -that's hopelessly vague - someone else will be able to remember better.)
I know it's not for everyone, but the GP gave me some mild sleeping tablets when I awaiting results and tests. In case you want something on hand for if you are really struggling to get off to sleep. Only mentioning in case you hadn't though of it, - I know lots of people don't like taking pills 
Sparkle - they are bastards aren't they?, no wonder you are finding it all a bit much at the moment, actually I think it probably helps to have a bit of a cry every now and again - helps release the emotions. I would take heart from what LJ says about her application, but it is so awful that people who need help have to constantly jump through hoops to get it 
I'm going to a talk this afternoon on healthy eating hopefully I can take any advice given on board and stop scoffing rubbish. 