Belittling a 14 year old for experiencing sexual feelings or urges perhaps isn't going to do justice. It's the peak of puberty and could also be a phase, thus it is normal, and you guys saying "All I wanted to do was play card games and do well in school at 14" are lying because we all had (unless you're asexual) thoughts and feelings.
Anyways, as to you, there is plenty of information online (not necessarily porn) that are educational and advice you on what it is what you're feeling and why, and how you can express yourself healthily. Even Youtubers, like Laci Green, give great advices.