I'm still confused, Am I a lesbian

the first time i saw another girl naked was in the locker room at school and i remember getting very wet and not knowing why and it was very uncomfortable for me all day. i had to go to the bathroom and i looked down and my clit was extremely swollen and was sticking out. i remember being so scared and not knowing what was happening. when i was laying in bed that night i started thinking about the girl again and her breasts and my panties got wetter and then it started to throb and i started to think about what it would be like to kiss her and thats when it started to ache and hurt. i didn't know who to talk to and i started thinking about what she would say if i told her i wanted to kiss her and thats when i started crying because i knew those thoughts weren't normal. and i hugged my big pillow to muffle the crying and i was crying so hard and it was throbbing so much i kind of started rubbing myself on the pillow to ease the aching, and i didn't even realize what i was doing but i then started frantically humping the pillow and was thinking about the girl and touching her breasts and i was crying so hard and moaning at the same time but i couldn't stop humping the pillow and then all of a sudden i felt something happen and i moaned so loud and was so scared cause i started squirting in my pants and i tried to take them off and i came all over the pillow. sometimes i see a pretty girl and get the same feeling in my pants but i usually just try to ignore it cause I'm so embarrassed. then me and my friend were swimming one day and his swim trunks came off, I saw all of it and my clit swelled up again and i was so scared he could see it through my bathing suit, and i went home and was so aroused and thats when i started to think am I a lesbian or am I straight, but i didn't know what to do, i was so turned on i was like shaking and i was up all night just lying there. Then the first time i masturbated i was watching tv and one channel was cinemax and it was girls kissing and i immediately started watching and squirming around on the couch and then they started touching each other and rubbing and fingering and thats how i learned how to masturbate myself, and i watched for awhile until i couldn't stand it anymore and i stuck my hand in my panties and started rubbing and really started to fantasize about having sex with the girls and i remember being so nervous and all of a sudden i came a lot. i had to masturbate again all night, i needed the release so bad, so much tension had been building up for so long. I've never talked to anyone about this but now i cant stop masturbating thinking about my friends (girls and guys) and women in magazines and, I'm so scared to admit i might be a lesbian because, i just don’t know if i am. please any advice would be helpful on this, i don't know where else to turn