before Christmas i noticed there was a small bump near the base of my hairline on the back of my neck, my mom said it was a lymph node but i wasn’t are we had any here. plus it’s only on one side.... it’s still here. i’m freaking myself out. could this be dangerous? it doesn’t hurt, it only becomes tender at times because i have a tendency to mess with it. I do have a small scab in my head I won’t let heal completely.🤦🏽‍♀️ could it be from this? as a way of fighting that off? should I be worried?