my doctor will see my self-harm

I'm going to the doctor in 4 days and my last relapse was yesterday... No one knows I'm doing this.

If she sees it, she'll tell my parents who will harass me to find out what's wrong, they won't look at me like before. They'll probably send me to a fucking psychologist... I don't want to.

Has anyone ever been through this? What should I do?? Please help