Getting worried....

OK...I am really starting to worry here! The mail arrived nine o'clock this morning and no 171H/797C approval. It has now been over 1 month(one month & five days to be exact according to what CSS told me) since CSS said that they sent it in! I am getting very worried here that it wasn't sent to the correct office. I wish I could find out if they have received our completed home study. I am a nervous wreck here! If we don't receive it within the next week...I am going to start making some phone calls. I know there have been two federal holidays since being sent...New Year's and M.L. King Day, but would those two days of closing actually cause a delay?