Hmmm. I always feel at loose ends the morning after I complete a story, like I've sent my baby off to college. Well - I did that too. Egads, I really am feeling at odds. Two babies off in the same week.
But - it's also a good feeling. I'm done! Well, not really done. I still have edits to go and I know it needs a lot of polish before it's ready for print, but the basic bones of the story are done. Whew.
So - what does a writer do when they're done? Start a new story of course.