Until it happens to me that reading is statistically insignificant...There is easily that much error factor imo...That being said, I'd be in the same mind as you if it happened to me.
Heck I started worrying when it took an extra day to get my results last February..No matter how much I say I'm putting my big boy pants on, they are not on when it comes to the psa....
I start worrying a month in advance...knowing there isn't any reason for it cause well, you know..
Good luck...its just a blip.