Tmi (no pics) vagina question

Hi ladies.(kind of tmi maybe about vagina) I didn't really know where to post. I was wondering if any of you could help me. I have never been to an OBGYN (i have an appointment on the 23rd) and i am 20 yrs old. (I havent gone yet because the one i wanna go to wasnt accepting new patients & i wasn't sexually active till i was 18) Well i noticed that my vagina is possibly kind of different from most ladies. It feels different to the touch, i think, than it's supposed to. So here we go- i feel my clitoris and my inner labia, and the vaginal entrance. Right inside the entrance is a hard thing. Like if i push upward towards my face its hard like a bone. Pelvic bone? I can feel all the way around it & it goes deeper inside of me & i feel like because of it, i can't find my cervix! The "hard thing" doesn't hurt at all. Just when i push on it sometimes i feel like i have to pee. It doesn't prevent me from having sex or anything either. Please dont judge me 🙊 does anyone have this?