Hi, I'm a 31 year old female, and I've had this lump on the left side of my neck for years. It's soft although I don't push too hard on it, and you can see it if I tilt my head to the right. I did have my Dr. check it out before, and he was not at all worried about it. Figured I had some type of infection or just a swollen lymph node. However it has never gone away, and I told him that at the time of visit. It does worry me a bit... Should I be concerned?