So I don't have a dad, I know who he is but he has never been around and I have never met him in person, my mum has always been both my mum and my dad. I would like to know his and his family's medical history. I'm not sure how to go about doing this? I don't want to upset my mum by telling her that I want to get in contact with him. I would just like to know, as I'm curious. I'm 17 by the way, thanks in advance x