Could I be a lesbian, or bi or just confused?

I've never really given much thought to being a lesbian. I've been boy crazy for pretty much all my life. I've had a really hard time becoming sexual, I was assaulted twice in my life, I was assaulted by my neighbor who just got out of prison. I started masturbating a year ago and it feels great, but no actual sex...... I was watching Scrubs, and there was a scene where a girl walks in looking really hot, and I felt really horny, like more so than I have before in my life. I've had crushed on guys but never girls and I'm basically a very girly girl. I'm from a very sheltered town in middle america and I'm super accepting, but I've never given any thought to being gay.....