do you remember your number or have access to it? having the actual pack isnt important as long as you know your number. i think without your ap number they just wont be able to ensure which test belongs to you (or something like that ?) lots of kids at my school lose theirs; just talk to whoever proctors your exams and see what they say. i think usually they have methods of recovering your number. otherwise you may end up having to contact CB, not sure.
"Q. Do you need your AP Number to recieve grades?
A. No, if you chose to put your SSN on your tests, but yes if you chose not to.
Q. How can I recover my AP number?
A. Call their office at normal business hours at (609) 771-7300 or (888) 225-5427 (toll-free in the U.S. and Canada). They will ask you some personal questions to confirm your identity"
so actually it sounds like youre fine; best of luck!