probably there head
a turtle neck
possibly an swollen lymph node possibly an swollen lymph node
This site cannot diagnose illnesses, diseases or pregnancy over the internet, nor is it the purpose of this site to do so. The best that can be offered is advice. If you are truly worried about your...
It's something that a doctor ought to check.
If you are worried about the lump on your neck then please go visit a doctor. A doctor will be able to help you much more than anyone here.