Well one of my orders of 13 packages ship 5/13 with a scheduled delivery date of 5/26 ...
THEN they hit FedEx purgatory... I.e. customs. About two weeks later they started to dribble out ... sort of virtually At first... as they sent me updates on time of delivery every two days moving the date two days away. Till bam a couple actually did show. Then I started to get the expected time of delivery changed every day. Somewhere around 6/11 I received the 12th package ... and lucky #13 was declared lost months later.

You have nothing to worry about