All you can do right now it to ask mom or dad. You could chance asking your doctor when you visit the next time, but as a minor you have limited rights as to your health charts. I would think why not, it is your body and you have the right to know.
You may have a gender disorder self diagnosed by how you feel. I have been in contact with many who were raise a girl knowing they were male and visa versa.
There is only one way I know how to find out and you are too young to get a Karyotype blood test ( a blood test that determines sex) but this is very expensive test if not covered by insurance < $900.00.
Um I was wrong in the above message. You are not to young to get a sex chromosomes test. You can ask but it will have to be approved by your parents since their insurance will pay for it if it does.
jj110, I have just joined this forum with similar issues to you, although I am a lot older. I have done lots of research on the internet over the years trying to find my own answers as I have been estranged from my family most of my life, and am not given straight answers when I do question.
I think it is reasonable to question things. I believed things I have been told, and find out now how untrue they have been. How you feel IS important, and with courage and persistence you will find your answers I trust.
In Australia, we are entitled to our medical records at age 18, and you are lucky you are posing these questions in a time where you will find support and people like you and unlike you who understand. I think it is key to keep asking questions until things "sit well with you". Information is so much easier to get hold of with the internet, and making contact with people who can support you is also available too.
Unfortunately for me, my medical records have been destroyed, and all I have is physical and psychological scars I am still trying to work with to find my truth.
There are many cases of many different conditions which blur the boundaries of M and F. It seems to me like a jigsaw puzzle. Gender, and gender identity, and sexual orientation, and sexual preference, are all different things and are all personal and unique to each individual.
Are you able to have any discussion with your sister, just to use it as a fact finding discussion to see what she thinks she knows, maybe bring up the conversation indirectly. She may not in fact know too much, or she may have interpreted it incorrectly, but asking questions is a start.
In the short term it is not normal to be in that much pain due to menstruation. You need to consult a doctor about pain management, and to establish what is the cause of this pain. Can you tell your mother about the pain and ask her next time to get you to a Dr so she/he can assist you. There must be something that can be done in the short time to make your periods more manageable, and then you can deal with your other issues, bit by bit, as you question and learn.
I hope you get to read this, and hope that between the time you wrote your letter and now, that you are feeling better, and are finding out things you need to know.
Keep in touch.