My mom is snooping in my room? Please help me?

Well, I’m 20 and in college. I’m still at home with my parents because they don’t want me to move out and have a job. They are very religious and conversative.

Recently, I started locking my room (which is something that I don’t do) just to keep out my brother from stealing my pants. I stay in my room all day and I’m very sensitive in my surroundings that I can totally tell if somebody entered my room, and yep. It’s my mom.

My parents don’t know that I’m sexually active (because I think that it’s none of their business). However, I was such a big idiot to throw an empty box of condom in my trash. Last week, I noticed there was something different. The floor was cleaner and to my surprise, the trash was gone. She saw the box and two days ago she talked to me on FB about it and she was a bit angry… and awkward.

I’m not boasting and saying “oh i’m 20 i’m already an adult i’m on my own self i can do whatever i want”… My relationship with my parents isn’t that good. My dad is emotionally abusive and my mom is so-so. I have been rejected for so many times in my family so it’s better for me to keep my own secrets to my own self than to share it with them, because it would just cause an altercation.

I really feel violated. This is their house, but this is my room and for me, it’s private and it’s my sanctuary. I don’t really feel comfortable on what she did. If she wants to know stuff about me she can talk to me (which no one in my family does) and not snoop in my room. Is there any way to tell her not to snoop in my room again because I don’t feel okay with it? I mean, I know she’s still gonna snoop, but at least I want to tell her that I feel violated and disrespected on what she’s doing…