My mom ALWAYS barges in when I shower and I hate it so much!!

She is a strict catholic and she doesn't allow locks AT ALL. We don't have locks in our rooms or our bathroom.

She said it's to prevent us doing adultery or masturbating basically 😑

BUT! I feel like I NEED privacy. I want to masturbate etc. Even if I don't masturbate I don't like people barging into my room OR WHEN I'M HAVING A SHOWER!

I am 19 and I feel like I deserve some privacy

What do I do? I want to just move out but she won't let me until I get married