Should I be worried?

Tracking isn't real time, just check a few times a day if that. You are just going to give yourself grey hair if you worry about it.

 

My site is shopping but I don't think too many fathers are expecting bridal accessories this year.

 

If you pay attention to how many impressions you receive at various times of the day, you should see this clearly.

My impression numbers were way off earlier today from normal, though my clicks and revenue were not.

Also I have an independant tracking program whose impression numbers were also normal.

However over the past few hours Google seems to have become OK again, and recording impressions properly.

Note that this does not appear to be a delay issue—needless to say, impressions stats are no more delayed than click and revenue stats. And we have no indication that the lost impression stats are going to reappear. You just have to take today's numbers with a grain of salt, and exclude them from any analyses that you might regularly perform on your stats.

 

Na, I would not worry at all, Google will sort it out if there are bad clicks, don't worry, be happy man.

PS: HELL YES I WOULD WORRY, THE WORLD IS COMING TO AN END

 

Yea, as Anthony said don't worry about it.