There is a spot about 2.5 inches below where my strap is, on my spine, that has a horribly sharp pain anytime I lean forward, but only at acute angles. If I lean to 90 degrees, there is no pain, and if I am sitting or standing straight, the pain is only very dull. It's been this way about 2 weeks. It feels like there is a bruise there, but there isn't. I'm only 32, in good shape, have had no recent trauma, but lately it's getting to be painful when I move my arms certain ways or even at times when I inhale. Should I be worried?