Adjustment of Status - I-485

Hello everyone,

I would like to share my experience and ask for some advice,

I went today to my interview for the Adjustment of Status based on marriage at Fairfax, VA.
We both were very nervous and the officer making the interview was kind of cold. Once we walked in, we had to give our IDs (and also passport for me).

He asked us very formal questions like the name full name of the partner, date of birth, name of father and mother, where he was born and so on, very formal. At that time, he asked my husband (US citizen) for our day and place of marriage and he didn´t answer correctly.
We are a just graduated couple and we don´t know very well how to handle some things so we didn´t have many assets in common. Still he got our bank statements, shared health insurance, joint tax return and 4-5 pictures we brought.

At the end, he asked us if we wanted to add anything else to the file so I jumped it to add our engagement video, that was a very cute video with a very long and lovely story behind that might though it would help us (he refused to watch).

So after that, he handed us a document saying "NOTICE OF INTERVIEW RESULTS. Your case is being held for review. At this time, USCIS does not require any further information or documents from you. Should further information or documents be required, you will receive a notice in the mail. We may also schedule you for another interview at some point. Otherwise, a final decision will be mailed once your case is complete."

He pointed us another 6 cases on his desk and said " once I am done with those I will work on your case and you will receive a letter from us with our decision" and explained us what the document said.

At this point I am very confused. Had anybody have a similar experience? is this document something normal? How long should I wait to scheduling an infopass?

Thank you so much to all!