I attended my visa interview today (10/9/2019). I did my Masters in CS. Graduated in 2016. Working with my petitioner company for 2 yrs. The interviewer asked my petitioner name, location, salary, from how long I was working, when I graduated, when my opt started. Later asked if I was out of status anytime and I said I was never on unlawful presence. She then told me that she is going to have my passport and at this time, I don’t have anything to do but gave me a 221(g) blue slip which says refusal for administrative process. Application Will be reviewed by administrative process.
What should I do at this time? Why did they keep my passport? Does that mean it’s a RFE? How long will it take? What will they do in the administrative process?