Alone

The youngest of my brood, the never-spent-the-night-away-from-me boy of mine just left (and the girls but they are old hands at traveling with nany and poppie). I am completely alone for the first time in almost nine years.
I know I am supposed to load this pile of boxes into the van, drop it off and meet the husband for dinner at the restaurant, so why have I walked completely through the house three times without picking up a single thing?
Who am I again?
What was I doing?
What do I do now?
I'm lost...