Do not worry about it.
I think, most possibly, the application your attorney filed is not complete and returned by INS for completion. Well, the attorney usually will not tell you that is his/her mistake, probably the attorney already resent it to the INS. Just wait for a few more days. This happened to my once when a univesity filed H-1B petition for me, the university officer forgot to sign the petition and therefore the application was returned by INS for signature. However, she did not tell me this problem when I asked her for the receipt, even no sorry for her mistake after I found out when I finally moved to the university 5 months later.