^I believe that Vulcan nurse was killed in Caretaker
And I think that the reason Vorik didn't prepare better was that he didn't know what to expect with the Pon Farr. I'm sure as a Vulcan he was aware of it, but Vulcans don't really go around talking in detail about it. I'll bet Vulcan sex ed is basically "you'll have some hormonal changes, but don't worry, you'll be hooked up with an arranged spouse and everything will be taken care of."
And then - bam - Pon Farr comes along and it's a lot worse and more uncontrollable than he ever expected.