try some lavender baby oil for the dry skin before bed...the insomnia and night sweats will dissapate in a few days and you will begin to sleep well....there is nothing like a really restful sleep to perk you up.
good luck on the interview and congrats on the 3 days...tomorrow it will be 4!..keep posting and reading....drink lots of fluids to help rehydrate yourself.
lots of people have emotions all over the place until they feel more calm, and you will.