Hey girl!
I am intersex and my parents knew it and tried to make me into a boy anyway.
Soo, had I had proof about my condition as a child, I think that I would have had leverage to be allowed to be who I really am.
So, yeah, my opinion is that you should address your concerns about your possible intersex status with your doctor, without your parents present, and ask him/her about testing you for any conditions that might explain your physical differences. Your doctor has an obligation to look into your concerns, and if he/she won't help, try to find a doctor that specializes in intersex/trans issues and call and try to get a consultation. You have a right to know your situation, and it is even possible your parents know something already and don't want to help you be who you have a right to be.
Just my take on it, since my parents lied to me and gaslighted me all my life. As a result, I suffered through a lot of stuff that was avoidable.
You might want to look at the post I have linked at the bottom of my signature line. This is what happened to me, it may not apply to you, but it surely illustrates how bad living with wrong info can be.
Hope this helps, and I hope you are able to find real answers to your very important questions.
*hug*
MissyG