Hmmmmm, my first thoughts were for your headset, but then i realised that you've only had the bike a couple of days, maybe the cables stretching, maybe they're rubbing on the inside of the outer cable hosing, sounds very strange to me on such a new bike... Take it back to the shop and see what they say, or ride it like it, maybe its just wearing in?

Its crap when you have a new bike and something isnt right isnt it