Hi Ethan.
I think i can kinda relate to what you're feeling lately, even though i'm pretty sure it's not the same and you should definitely act the way it feels the most comfortable to you yourself. I can only tell you how it was for me when i was your age (god that sounds like i'm super old >.>)
At the moment, i'm 18, so 3 years ahead of you. At your age, i was trying my best to be a "perfect cis male", even though i had some doubts and thoughts in my head telling me not to act like that. I had a girlfried for half a year to be "extra-cis", but in the end, i just accepted it for myself, with the help of some close friends. I tried out being a girl, online first on some discord servers. It felt more natural to me than being that cis male i pretended i was. As time went on i saw it more and more, and accepted being different, being transgender.
I know this is just my story (kind of), but what i want to tell you with it is that there's no real way we could tell you what is right or wrong, you have to find out for yourself, you can try the thing i did, living a "girl life" for some time online, seeing how it feels. You're the only one who can answer your question

And about your parents, that strongly depends on your relation with them. If your relation is good and they're accepting stuff like that in general, talk to them about it. Tell them that you are not sure, maybe it could help you

Emilia~