Bad Back

I have a bad back. It can be fine for months on end - and then bam, back agony. It all started when M was 11 months old. I pulled her out of her high chair without removing the tray - and that was that. I have no idea what went wrong this time - I was sitting at the kitechen table yesterday and when I stood up - ow. I managed to get to work this morning for my ppa time - and then came home to collapse. My head saw me struggling down the corridor - and has got cover for the next 2 days. Hopefully that will be long enough for it to settle down again - there is a busy weekend ahead and I really haven't time to be laid up.