Is it normal to think of my mom like this

Okay so there is this girl I like (in a lesbian way) and my mom found out about it. Now here's the thing. I am kind of worried that my mom will somehow use this information against me. I know that sounds crazy, but its not. Last year I had feelings for someone and my mom DID use the information against me. she used it to threaten me. I was just wondering if its normal to think of my mom as a potential danger to myself. You know how when you meet a very creepy person and they seem like they might do something bad to you? Thats how I feel when I am with my mom.