status null pvg what does it mean. the order number is RA313995162CN, RB739863505CN

hello2 of my orders has been showing null pvg since 16/11/2013,please can you help me to find out the status it is actually my wedding gown and my wedding is on the 3rd, i planned for it to br shipped to the USA were my sister will bring it to me in NIgeria but with the way am looking at it it is not as not arrived yet and other orders i made after then i have received it. help me because am a bit confuse and worried now pls . thanks