Keep in touch and give the Zoloft a few more days to kick in. In the meantime, try
"the lemon thing" if you have any lemons in the refrigerator. That might relieve a little
of the tension; it does work for some of us.

Try to sleep well; that always helps. Ask your psychiatrist for an anti-anxiety medication to help your feeling tone on the trip if you need it. It could be something about the trip and visit that are affecting you even now.

Let us know how you are getting along tomorrow, please.