I Have Been Snorting Norco And Cocain. Everyday Almost For

I have been snorting Norco and cocain. Everyday almost for a year. Cocain Just started in last 3 months. My nose is in severe pain and raw. Looks like I have a cold sores inside my nose. I have stopped snorting due to pain being so bad I am in tears for hrs. I want to get better and stop and never do again which with the pain I am having I will never ever do again just want to know what I can do to help with pain in nose and also tenderness in top front teeth. I have been using simple Saline nasal mist and keeping it mosturized. What else could I do?