Hamilah:
Sent you a mail

I also got the 221g form.

I went for my interview on the 17th of May. The VO told me my Visa was approved and my passport was retained at the embassy. However, two days later, I got a mail asking me to fill the supplemental questions attached.

Then on the 26th, they sent my passport back without a stamp and a 221g slip telling me I'm on administrative processing.

I submitted the supplemental questions again, then I sent them a mail two weeks later. The next day, they sent me a mail asking me to send my passport back for the final processing.

I got my passport back three days ago with the stamp.

The wait can be frustrating and maddening, but I'll advise you just do whatever they mark on the 221g slip. Then, send them reminders after about two weeks.

All the best!