Femslash: How far is too far?

Before I found out I love femslash I had straight pairings I really like. Then I heard some perverted guy at school talk about femslash and decided to try it out. So I did and I was like OH. MY. GOD. This is amazing! And ever since then I've been really worried about my mental sanity. The only time I'm not thinking about femslash is when I'm thinking about yaoi. I started getting into yaoi soon after and I love it! When I see yaoi or femslash of characters I like I get a tingly feeling and get really excited. I never felt like that with straight stuff. When we read stories in class, I just read ahead so I can picture two random girls from the story kissing/making out. What really creeped me out lately is, we've been learning about the 20's in history class and the teach showed us pictures of how flappers dressed so I pictured two of them kissing. Like what the hell is THAT all about? Also I watch Laverne and Shirley and they kissed like three times so each time I did a fangirl squeal that woke up like half the freaking neighborhood. It doesn't really help that every single book, show, movie, and game I encounter I want femslash of, especially if it's from a decade I really like (such as the 20's or 50's-80's.) I'm like a fujoshi, but with lesbians instead of gay guys. I'm like that with gay guys too but not as much and there are already posts about that so...yeah. I just wish I could be like the normal girls at school. But I look at their straight pairings and can't see how anyone can find it sexy or cute. The only time I fangirl squealed over it was when I was watching Some Like It Hot and Josephine kissed Sugar. But that doesn't really count because Josephine was dressed up as a girl and looked alot like one anyway so my brain registered it as two girls. I get judged for liking femslash and yaoi. Several of my friends know about it and a few of them think that it's for perverts only. By the way I am a straight girl. I can't get butterflies or a tingly feeling from a girl on her own, just two girls together.