2006 Pathfinder Question

[davisa]

I bought a 2006 Pathfinder in December from a dealer. I have recently noticed that when I first take off, and only when I first start the car and take off ( not at a stop sign or coming to a stop then accelerating) that it makes a clanking noise. It only does it when I first start the car and move. I have been trying to determine whether it comes from the front or the back- but I can't tell. Anybody have a clue?