In my case I was in US got my H1b after being on F1. I travelled to India for my visa stamping with a I797a. I got a 221g on Nov 12th and it is still under administrative processing. Meanwhile my employer had filed for an amendment and got a I797b approved. Till date I dont see the status change for my 221g. What should I do now. What does receiving a I 797b when I have I 797a mean ?

Thanks for any help on this.