Am I considered a lesbian because I afraid of straight guys?

To me, you don't sound gay, just somewhat bi-curious. I suspect that, deep down, you're either an asexual girl (like me) or a straight girl who just hasn't found her true Mr. Right yet. That said, you're the only person who can determine your own true sexual orientation and figure out where to go from there. If you need help doing that, talk to your school counselor or another neutral professional counselor about your feelings. Just don't rush to label yourself, OK?