Is It Jet Lag?

I was fine the first two nights.  I fell asleep immediately and woke up on time.

Not tonight.  It's hours past my bedtime and I finally got out of bed and planned the first lesson for tomorrow.  since I traveled to NY to bring my father and visit my mother I realized that I'd miss a day of work.  I sent lessons in to be used.  But it got more complicated.  I stayed there longer than anticipated and I missed all last week, three days of work, since we weren't supposed to start on Sunday.

I really haven't had much jet lag this year.  Now I do.  Or is it just nerves getting back in the groove of teaching and the logistics of making sure my father is cared for?