Back hub acting up

[TomL]

Hi,
On Sunday I bought a new bike. My friend has a half pipe in his back yard so i learned to ride that and i am pretty good at it. Yesterday after just riding around regularly i start to feel that my cranks catch in a certain spot. I take off the sprocket thinking it had something to do with my cranks. i twist the chain wheel on the back hub and i found that it was catching. I put the cranks back on and i start to ride around thinking maybe it was just a new bike thing and i had to break it in. After riding a little i start to here a pop sound every time i pedal. I don't know what to do. Should i contact the bike company or bring it back to the shop?
Please help

thanks,
Tom L.

[FredS]

I would take it back and have the shop look at it.