Then I go on the Internet to see if I can figure out if it's likely to unravel further. And I realize that I've been picking up stitches wrong all along. Which makes it my fault that I'm putting the yarn under stress, and my fault that it snapped. And means I really should start over and get it right.
Oh well. It was going reasonably quickly, after all. So it won't take me THAT long to catch back up, I hope.
Good thing I'm at home sick (very very sick!), feeling sorry for myself. Lots of time to knit when feeling sorry for oneself.