I might be dying sooner than most kids.. dont know who to talk to..?

Under 18 you will need your parents permission and the doctor can discuss it with them. so unfortunately, the only way to get it done without their acknowledgement is in oct when you turn 18. However, I think you should just ask mom to ok the testing because it is very important that you know if you are okay. Dont think so far ahead as to death or even speaking that disease into your life. Just think positive and find natural ways to prevent the disease. I'll be praying for you. Best wishes