Well thank you all who replied, (I feel stupid for posting really when there are others with much bigger things going on in their lives). On the whole it all worked out ok, ds was a brilliant little star, making everyone fall in love with him, as he seems to be so good at!. He didn't have gas, he had an i.v anaesthetic, which made him scream the place down when they were trying to find a vein (successfully on 3rd attempt), even with the cream on his skin to numb it. I think it was more the fact he hates being touched by strangers, rather than he could feel it. I could have done without the nurse we were assigned though, who felt she was entitled to order my other children around and overrule me (we had to take them out of school for the day), who made my son cry because she was so loud, was generally overbearing and obviously disliked by the rest of the staff. Dh almost throttled her when he was waiting to be taken to recovery and she was arguing with another one about why she wasnt going to take him! He found his own way in the end. Could have done without the detailed list of food allergies he has being written down on his notes (dairy wheat and soya) to be told that the kitchen found it impossible to find him a banana but he could have spaghetti! He ended up with a packet of crisps and an apple - haute cuisine not. Could also have done without the staff in the playroom telling me my children had to be supervised by me or dh at all times instead of them - what are they there for then? Could also have done without being ordered back to the ward with ds when I tried to supervise the other 3, because he was only allowed to sit on my lap by his cot after a ga, and not sit on my lap in a playroom with a balloon.
BUT, the MRI staff were very pleasant, and the anaesthetist was very quick and efficient. I wasn't allowed past the room where he went to sleep though. I should get the results within 2 weeks, so will know if his cp is showing up in one area of his brain or not. If the brain damage is too scattered though it may show up nothing, so we just have to wait and see.
On a lighter note , Copper I love moving house, don't really find it that stressful, so I must be some kind of freak!
I think it was more that my son has fought so hard in his 18 months, and this was a long time coming, so it had become a big thing to me, coupled with the fact that I was driving back to a town I loathe, so I just needed to let go!
Thank you a million times though gals!