about 6 hours after my previous journal, I went to lean out over the computer desk in the study and got this huge spasm of pain in my lower back! I had to go lie down and couldn't move without my dad half-carrying me to my room.
Then I started to shiver violently for about 20 minutes even in my toasty warm room.
'Well, WTF?' I thought.
We phoned various people who all pretty much said the same thing: pulled/strained a muscle in my back and was in shock. Must have been sitting badly.
I found that i could walk about if I put my weight on my arms but seeong as how we didn't have crutches from anywhere, I figured upside-down golf clubs would do. That worked.

So today, I found that one of them weightlifter-type back support belts does the trick, so now I can walk about and do stuff pretty much as normal.

It's one of those things that you couldn't have foreseen but i'm glad that the worst of it seems to be over.

EDIT: I'm pretty much fine now, much to my relief! Have been for a while but forgot to update this entry. Thanks for all your support, it's been really helpful.