I went to the Social Security office 9 days after I was approved, and they told me because it hadnt been 10 days yet, my info wasnt showing in the computer. They put a request for immigration to send the info over, the lady told me that it can be 2 to 4 weeks before I get the card, lets see what happens although she said its usually faster than that, and they just tell that to people so they dont bug them all the time.