If you don't mind can you share info for qs below
B1/B2 visa?
Did they request additional info/docs?
when was your interview?
location of your interview?
I'm in the same situation, my interview was on February 28th. The officer returned my passport but didn't tell me that the visa was refused. instead she said we need more information and you will receive an email from us please reply with the requested information and if your visa is approved you will receive an email from us requesting your passport.
Once I left the consulate I received an email from them requesting to complete a from called DS5535, its a form where you have to fill out your travel history, employment history, address for the last 15 years and siblings names. I sent back the requested info same day but I haven't heard anything until now.