Down there: Normal or Not

I am a teen with occasional odor down there. I’ve never had sex. I don’t douche. It’s not itchy. And my discharge is regular color and consistency.

HOWEVER, occasionally there is gray and white mush that clings to my outer lips and pubic hair. And a thin white film on the clitoral hood and inner labia. I know it’s down there once I notice a smell. I take a shower and it’s gone for a few days then comes back.

My diet isn’t the healthiest and I don’t drink much water but what is this?