Well, today was David's prediction. We are only about midway through the day, and while it still could happen, it's not looking too promising.
At our doctor's appointment this morning, I was 2 1/2 cm dilated and 80% effaced. A little progress at least. She said she tried to "stir things up in there". Not sure what the means, but if it works, by all means, stir things up!
For now, I am walking a lot. Can't wait to meet our little man!