I've had pins and needles in my fingers and feet all day and it's driving me nuts! I never usually get them, unless I've actually sat on my foot till it's gone dead or something. Seems a little odd, and more than a little annoying, that they appeared out of the blue like this.
Would you be worried, or am I just showing exceptionally low levels of tolerance for discomfort? 
Yes = chill out, it's pins and needles
No = does sound a bit unusual