All I can say? Don't trust USPS tracking. If it looks like it isn't where it should be, it's usually wrong. Sometimes they don't update it at all, sometimes they list it in an entirely different state (thousands of miles away) when it's in your mailbox (or will be the next day). Sit tight. Let me know if you don't get it in a few days.
I've replied to this on several threads.
It isn't 'tracking', it's 'delivery confirmation'.
The usps isn't required to scan the package at every stop in and out.
It's only required to scan it at 'delivery'.
It's mainly for a confirmation to the 'seller', to make sure it was 'delivered'.
The only 'true' tracking systems are usps and fedex, where their required to scan the package in and out at every stop.
usps doesn't do that at every stop and their not required to do so. Their only required to scan it when it's 'delivered'.
so, it's do unreliable for tracking purposes.