Help me find my package please?

Hello my package was shipped from Signapore post on 2-05-15 it says "Despatched overseas (Country Code :Us)
And on the Usps website it's stuck at Origin Post is Preparing Shipment it's been like that since the 2-05-2015 my tracking number is "RB002196565SG" can you tell me where it is please ? I thinks it's in Kansas but could you tell me if it's in the Us yet?