I sent in my iPod nano to the replacement program about two weeks back. However, I checked the status of the repair and it still says it has not been received yet. Is there any way to follow up on where the nano could be? I sent it via FedEx.

I sent in my iPod nano to the replacement program about two weeks back. However, I checked the status of the repair and it still says it has not been received yet. However, my boyfriend sent in his the same time I did and his repair status says repair being diagnosed. I still have the "receipt" of the package when they first sent it to me. I sent it via FedEx. Is there any way to follow up on where the nano could be or maybe find out if I can still get a replacement even though my nano might be lost in transit?