FedEx tracking is apparently down. I had a hard time tracking my package today- it kept saying it was in Memphis. I called customer service twice, the first time they said the tracking system was wrong, and it would arrive by noon. The second time, they said it would be a day or two before it arrived IF I was lucky, due to severe weather. 10 minutes after I got off the phone my package arrived! Hopefully yours arrives soon, too.
They did make it clear that the FedEx tracking is malfunctioning, so I wouldn't count on it to be reliable.