Hello all, I am a new to goats. A few months ago I bought 4 boer does and one buck from a local guy who was selling his herd. They are boer/ probably boer cross. He said they were UTD on vaccs, but in hindsight his animal husbandry was lacking, so I doubt the animals I purchased were properly vaccinated. Three of the does kidded mid April. One had triplets. Here is my issue/ question: today I noticed one of the kids has a large lump on her neck that is hard. Everyone was dewormed with ivomec about a week ago, and vaccinated with tasvax as well. My question is what could this lump be? Should I be very concerned? Photos attempting to illustrate lump. Kids don't stay still long. Thanks in advance.