Bisexual

So I just turned 14 and I’m bisexual I’ve known for about a year now and I kinda got the hint a few years ago but my dad is homophobic and racist so I always have doubted it...anyways one day my mom asked me if I was into girls or guys and I told her guys and that’s when I really started thinking about it. I’ve told a few of my closest friends and one of them is telling other people and has been talking about me behind my back so I wanna drop her but I’m afraid she’s going to tell everyone at my school and I don’t know what they will think of me. I’m worried and I need advice!