l2 visa for NIV 221 (g)

I had a L2 interview today . My husband is in L1B. However I could not give I797 as the document was not with me. So the consulate handled me a white form and under NIV 221 (g) and have asked me to submit the I797 to the nearby OFC office. There was only one tick for I797. I did that instantly but I am really confused as in when will I get my Visa. They kept my passport too and took fingure print of my left hand. However when I asked the same question to the consulate he told me that the processing will be done in a day or two. But the person at the OFC office could not tell me anything. Can anyone please help ?

Can anyone please help me? Its urgent