Stand strong, and be proud for doing so. When I came out, I was scared for the same reasons, and was pleasantly surprised by most people's reactions. You might be too. :) Message me if you want to talk through anything! Good Luck!
You're brave! You were born this way. They may not like how you are at first, but you are still their son. Show them that you are stronger than hate. I love you! Good luck, sweetie <3