Possibly an odd question for a beginner Mac User

My screen has a small dot on it.
It may seem silly, when the background is black or dark, I can't see it.
I was editing a session this morning and had a hard time with a mark I thought was on the subject and after convincing myself that my brush in photoshop wasn't working, I realized it was on my screen.

I wiped the screen with a soft dry cotton cloth and it didn't go anywhere.

Its the size of a spec but it matters to me.
This machine is brand new and I have a little blip on my screen so tiny but SO annoying.
My eyes go right to it.

It is not ON my screen, it is inside my screen. When i place my finger nail on it, it looks about an inch deeper.

Does this make sense?
Is this pretty normal for computers and i've just not had it happen in the past? Its a new machine and this little spec is annoying the CRAP out of me while editing skin tones.

What would you do?

 

OK, I called the place where I bought the computer and although they will just let me return and exchange the computer for a new one, the man made me feel like i was being absolutely ridiculous for one little pixel.

The closer I do look, I've now found a second one but he said there is really nothing wrong with my system and its a little overkill to return it all the way there *two hours from here* just for one little pixel.

Is this insane that I'm doing this? I've never had a computer with apixel issue.