My husband has a lump on the side of his neck. It’s about the size of a pea, maybe slightly bigger, and is moveable between your fingers. It feels smooth. He noticed it a couple of weeks ago and I’m not sure if it’s smaller but it’s definitely not bigger than it was then. He doesn’t seem that concerned about it, he says he has had a similar lump before and it went away but as a health anxiety sufferer it’s causing me worry! Does this sound like a cause for concern? Thanks!