Dysphoria is a tricky thing, and it can be hard to convince parents thay your feelings are real. Often it can get brushed off or ignored, but the best thing you can do is be open and honest.
kraken's idea of writing it out is a great idea! It can really help you get your thoughts together and know what you wanna say.
Good luck! I'm sure you'll be okay!
If you still need some help or support, or just a place to vent, we're here for you!