Naturalization Interview Results - N-652

I had my Naturalization Interview today at the Los Angeles office. I applied on October 10th, did FPs on October 23rd and was scheduled for interview for today.

The officer asked me some civic and English questions first, passed that, no problem. Then went through the application, asked about work and travel (I did go to COP but that never came up), she just asked why I was out on a couple of my trips for a little too long and what happened to work and how I supported myself, I explained and she also asked about where members of my family are and I also gave her the information, she seemed satisfied. Then went through the rest of the application and had me sign it. She got my passport and travel documents and green card and selective service registration proof from me and asked if there was anything else, and I said I brought all that was listed on the interview notice. Then she had me sign the name change forms.

Then while typing away at the computer, she said the system is saying that there is pending background check and that everything else seemed fine with my application. Then she handed me the N-652 - Naturalization Interview Results form and checked the "You passed the tests of English and US history and government" option and the "Follow the instructions on Form N-14" option and the "A decision cannot yet be made about your application". On the N-14 form, she checked the "No further action on your part is required at this time. Upon receipt the below checked boxes, your application can be acted upon: (she checked) Other: (she wrote) pending for background check" option. I asked her if there is anything I need to submit or do and she said no and that once the background check is over, I should receive something in the mail. Then she walked me out, made copies of all the documents she asked me off, and handed them back to me and she said just wait and that this is done quick nowadays.

I left the office with a bit of disappointment and as soon as I got in my car, I received a case status update in the email saying: "we mailed a notice requesting initial evidence in this case. Please follow the instructions on the notice to submit the evidence requested. Meanwhile, processing of this case is on hold until we either receive the evidence or the opportunity to submit it expires. Once you submit the evidence requested and a decision is made, you will be notified by mail. A request for evidence is made when an application/petition is lacking required documentation/evidence (initial evidence) or the officer needs more documentation/evidence (additional evidence) to determine an applicant's eligibility for the benefit sought. We may send you a request for evidence at any stage of our review. The request will indicate what evidence or information is needed for us to fully evaluate your application or petition. The notice will explain where to send the evidence and will give the deadline for your response. Your application or petition will be held in suspense during that time."

And this was even more disappointing and confusing since she told me and it clearly says on the interview results paperwork that I don't need to do anything and she also confirmed. I am just freaked out and not sure what is happening with my case and what all of this means.

I would appreciate it if experts shed some light on this and if any member has gone through the same thing, share their experience.