Lying here on my sick-bed today,

I thought I'd cheer myself up and have a flutter on the National Lottery Thunderball, so I bought a lucky dip on line.
My numbers are 6, 9, 21, 27, 30 and 6 for the thunderball.
Imagine my surprise, (and horror

), when the numbers drawn were
7, 10, 22, 28, 31 and 7?!?!?!?!?
What do you reckon the odds of that happening are?