Wait, am I reading this right? The OP was about you losing your virginity?
Then SERIOUSLY you need to chill out, man. And there's nothing wrong with telling a girl that she's your first... I married the last man who told me that, y'know.
I thought it was the most amazing thing that he was able to be so open and humble with me, and it spoke volumes about his personality. So don't be afraid to be honest with her, or otherwise the communication barrier is just going to keep getting bigger over time.
Also, if your dick hurts, TELL HER TO STOP!!! I know it was your first BJ and everything, but come on, man. It's your body. You have to tell her what feels good and what doesn't. You don't have to shout it at her... just ask her gently to stop doing that, or to do something else that feels better. It almost sounds like she might have caused you to get a urinary tract infection, if it hurts for you to urinate.