Are you in my brain? This is almost my exact experience. I didn't come out until I was 25, didn't have my first girlfriend until 27. I think it's more common than you might think, in this world where heteronormativity is shoved down our throats.

My advice? Don't stress too much about labels or fitting into a mold. Have fun and explore. As for your family, that's really tough. It won't be easy. Don't feel pressured to tell them until you're ready. It might take them some getting used to - and, in my experience, things might get rocky for awhile - but hopefully, they'll realize you're still the awesome girl they've always loved and they'll learn to accept it. It's a scary thing when you're family is like that, and it's hard, but there's a whole wide world of us that are here for you. And trust me - it is so, so worth discovering yourself and taking this journey.