Can a gynecologist tell if a girl has an orgasm?

Why is it that when I went with my friend to Planned Parenthood, they wouldn't let me go in the room with her even though that's the whole reason she brought me? I wanted to go in to see how it's like so I can possibly make an appt. for myself. But I'm scared and I want someone in with me. Will they allow it if I say I want my boyfriend or friend in there with me?

My mom says she wants to take me to the gynecologist to check my virginity. Is it possible that the doc will be able to tell whether i have lost it or not?