What Causes Small Lump In Neck With History Of Having Costochondritis?

I m having discomfort in my neck, and I am able to feel something underneath my adam s apple. I m not sure if it s my thyroid or cricoid or something. I don t know if it s normal, but it s causing me to have anxiety and to suspect the worse. When I run my finger down my neck, i feel my adam s apple and then about an inch below my adam s apple, there s another small horizontal bump. When i touch it, i get discomfort in the area. I also was diagnosed with costochondritis a few weeks ago and i ve read that it can radiate to your neck. Basically, what i m asking is should I be concerned by the second bump. Can everybody feel it? Is it inflammed from the costo? Is it a normal thing that everybody has?