If your piercing is infected or you even THINK it’s infected, you need to just skip the “go to your piercer” and/or “ask people from the internet” step and GO. TO. YOUR. DOCTOR. RIGHT. AWAY. That can get out of hand easily.
Also note, no matter how many times your doctor/parent say to take out the jewelry, you need to wait until you’re on antibiotics. Unless perhaps if it’s starting to embed, which is a whole other problem you should be seeing a doctor/going to the ER for anyway.