A few days ago I noticed a lump slightly smaller than a pea on my neck right under my chin about half an inch from the midline of my neck right under the skin. It seems to have gotten a little bigger after agitating it but I could be wrong. Just today I started to get soreness on that side of my neck when pressing my fingers up under my jaw. I am a 22 year old female nonsmoker and I would just like to know what this could possibly be. Thank you!