I would feel the same way...then realize I missed the inspector because I was working.
I find most inspections don't look at the unit operations UNLESS they were dinged for it...and unless the citation was out of the Nursing department's hands. Most of the time, they look at chart audits, which is in the hands of management. You'll be fine like a previous paster stated.
Its a stressful time. Just continue to do your best. Most of the time, they review charts and processes. Sometimes they follow a patient's chart from admit to the unit. They may interview staff, patients, and families. If you get chosen for interview, just answer the best you can and be honest. Try not to stress too much...chances are good that you won't even see them!
If any of them ask you anything, answer honestly. If you don't know, say so but tell them you know where you can get the answer, like where the Policy and Procedure books are, what the chain of command is, and so forth.