Good evening. Can anyone tell me if they've had a carbuncle? I tore mi…

Good evening. Can anyone tell me if they've had a carbuncle? I tore mine open, and they prescribed treatment, but it's scary... It's been three days since I tore it open, and it doesn't seem like it wants to heal. Plus, I'm due to have my baby soon. If anyone has experienced this, please share information. How long did it take for yours to heal?