Get yourself some hydrogen peroxide 3% solution and keep dabbing it on it usually gets rid
When I got a keloid bump like that in my ear cartilage I shrunk it at home with aspirin paste. But long term go see your piercer ☺️
I also used aspirin paste to get rid of one, at the recommendation of the piercing shop I got it done at.
It sounds like a keloid. I used to get them on my piercings as it turned out I was allergic to the metal piercings while my piercings were healing. Go to your piercing shop and ask for a plastic stud and that should sort it out x