southbound24

We went for the interview today, may 3rd, married since july 26, 2002, filed then too. He asked us for all the forms: taxes, affadavit of support, letter from employer, and medical, than asked a couple of questions, took one wedding photo, quickly scanned our wedding album, and marked my wife's passpot, case pending, I asked what that means because i thought we would receive the stamp on the passport right there, he said if we need anything we'll get in touch with you, I said" ok what now" he said "you turn into a pumpkin" I guess it was his poor attempt at humor, he said I'll review the case and thats it, we left I did not ask anymore questions because it was 400pm and he seemed irritatede.
So what does this case pending/review mean, should my wife and I be worried or is this standard procedure.