Chill while you wait is good advice. Annoying, but good. There can be bumps that are totally benign. I used to have little lumps in my earlobes that were just calcifications, and a cyst on my arm that was harmless but had to be removed because it was pressing on a nerve and causing pain. Google would've freaked me out if it had been available when I was dealing with those!

Do the scan, and wait and see. And if your neck still bothers you, there are some great neck massage therapy techniques that might help it feel better, once you determine if it needed treatment or not. (Most of us end up getting some therapy after treatment to help ease the strained muscles ... I would imagine they feel good whether the cause is medical or otherwise.) Something to ask about after.

((hugs))