Prutykitty,
Hi, and welcome to the boards...

NO, YOU WILL NOT DIE...Everyone develops at different times, and if you have seen your doctor about this, I assume your mother is well aware of this, right? What did the doctor say about the fact that you have not had a regular period yet? I'm so sorry that you are so upset and confused about this sweetie. Are you able to have an open talk with your mom about your feelings? Someone needs to help you understand what your diagnosis is, and what it means to you. I wish I knew more details, so I could help you... perhaps some of our other posters will have better advice. Keep in touch, OK?