“Perforated septum?”

I recently stopped cocaine use, I noticed I was getting white spots inside my nose which scared me. Now they are trying to heal but they are big sores and i see a hole and am not sure how much bigger it will get since the sores are so large and i noticed too late. I want to know what i can do to help heal my sores so I can prevent as much damage as possible, I'm terribly scared after seeing how the inside of my nose looks.