I made my parents and my brother a card each explaining to them that I am in fact trans and I prefer if they would call me by my chosen name and male pronouns. The subject got changed quickly and my brother threw the card in a bin (which I quickly fished back out because I spent ages making that).
My mum was quick to pretend nothing has happened and doesn't speak to me about it or acknowledge it, my dad has said several hurtful things over the course of the few days, I think he's trying but he also disproves..
He asked me if I was going to mutilate myself (surgery) and told me I would always be his daughter and nothing I do will take away from that.
I'm changing my name before January next year my parents said they would help me and I should receive my gender clinic letter any day now. I still need to come out to my extended family, all of which are heavily Christian - so that will go well - but its a start.
I'm not sure what to think right now about all of this, but I'm cautiously taking steps forward.
It seems like a lot of people's family go through a phase of pretending nothing happened/ that you'll forget or change your mind :P keep that ball rolling tho!
Here are a few resources that could help you:
https://www.susans.org/forums/index.php/topic,197523.msg1756901.html#msg1756901
and congratulations in any case :)
If you are from the UK you could have a look here:
http://www.mermaidsuk.org.uk/index.php/about-us
We offer information, support, friendship and shared experiences. We give support for individual young people, with or without support from their families, whether they are out or not. We will try, where possible, to help their families understand and accept their child's gender identity issue.