Hi, A couple of weeks ago I felt a hard lump in my neck, it's just to the left of my Adams apple and about level with it, maybe a little higher, the lump is some where between a marble and a pea in size, it doesn't hurt and it does move up and down when I swallow and stick my Tongue out, if I push it it moves inwards towards my Adams apple but kind of clicks, or pops as I move it. I have an appointment at my gp's tomorrow but I'm terrified it might be cancer, could it be a nodule on my thyroid or is it to high up in my neck? Could it be a rock hard lymph node? Do I have a lymph node where I describe? Any ideas/advice would be great.