Basically when i was 16 i was convinced i was straight, i thought i fancied girls, but it turned out that i was well and truly in denial, then when i was 18 i convinced i was bisexual, who just like girls more, and then i liked boys more, and then when i turned 20 i found out for sure i was gay, because i sat myself down and thought to myself, allthough certain girls are quite attractive, would i want to have sex with them, the answer was no, i never had a sexual fantacy about a girl before so why was i kidding myself? and i had sexual fantacies about guys so i put 2 and 2 together and realised i was gay.
for you i think you still have a long way to go, lots of questions to ask, but in the end you'll get there! and then if you feel comfortable you can label yoursef. but the answer never comes quickly or easily