Please get evaluated. So many families are in denial when a family member has a problem like this. My family is with the exception of a brother and I'm not sure he gets it completely, but he is there if I need to talk about it. I do, but only in generalities. I think mine began in my teenage years, perhaps even before than. The general rule of late teens to early 20's is not set in cement. Tell your family as much as you can of what you said here. Try to tell them this in a gentle and tactful manner and also let them know you are very serious. Good luck and hugs! Let me know how it goes.
PrairieCat