I had the interview last month. The interview went well. The officer didn't approve the case at the time but she told me to wait 2-3 weeks for any notices or a green card. I've been waiting and checking online case status since then, but there's nothing showed on the website that my case is approved. I wonder if I can make an InfoPass appointment to get a passport stamped(I-551). Will the officer stamp me the passport? I'm not traveling out the country but still want to get any evidence to confirm that my case is approved.