I think it is normal to freak out.
I don't think anyone EVER feels great after taking that test.
Besides, in the "age of communication" two to four week is an eternity.
Stop harrassing your FEDEX guy.
You can track your package:
Go to FEDEX.com
Track using reference.
Your zip code
I took my test on Tuesday, January 23rd. No word yet. Two weeks is around the corner. I hope to her sometime this week.
I'll let you know if I hear anyhing.