Does it feel like a nodule? If so it is more than likely a lymph node. It could also be a sebaceous cyst. If it continues bothering you, you should see a doctor.
you should really have to check that out...i do not want to scare you but it could either be a tumor..but dont freak it could be none cancerous. Or it can be something else but you NEED to have that checked out i will be praying for youuu God Bless