The same thing happened to me with my I-129F petition - NOA2 on May 4, I CALLED May 22, they told me they had just received the petition. I called again yesterday and they told me it was sent to my consulate May 23.
I would call just to get an update and for peace of mind. I don't know why they didn't update but atleast I know where it it.

Good Luck!
BTW the NVC has a phone # listed on their site and I had better luck calling in the early evening.