Is my hip out of place ?! why is my left hip stiff, popping so much, and hurting really bad?

Like the title explains, I'm having a lot of stiffness in my left hip. Its hurts to make any sudden movements like getting out of a chair or walking up stairs. It pops a lot too! The popping seems to relieve the pain temporarily but it comes back within ten minutes. The more I move, the more it aches. I'm only 16 and I shouldn't be aching like this!