I went to the chiropractor and he did an exam and x-rays, I am awaiting my next appt. but he did say that my spine was way out of place, he did some test where I stood and when I moved there were strings on it? but it showed my posture was incorrect, ever since then my back pain has gotten a bit worse and I also have some pains in my chest area and under arms. sharp pains that mainly come and go. what causes the sharp pains in my back shoulders and chest, and the pins and needles?