I had pain from my shoulder to my chin starting on Aug 22, 2014.Two days later, I had a swollen lymph node on that side of my neck and my shoulder was stiff and swollen. A few days later, another lymph node swelled up as well. It s been about 3 weeks, and I now have 6 swollen lymph nodes. My shoulder still hurts but is not as stiff. What could be the reason why more lymph nodes keep appearing?