I think my new piercing is infected - what to do??

Just got my helix pierced about 5 days ago and it has been progressively getting more painful and swollen. Just took this pic of the back tonight and it looks BAD. I’m assuming it’s infected? What do I do? I’m going to see the piercer again this week but not sure if this also calls for a doctor? How do I know if it’s infected, or if I need antibiotics, or if it’s just something my piercer can fix easily. Can the piercing be saved or should I just give it up? It hurts like hell and the pain is radiating to the side of my head beyond my ear. Help!