That is a good argument for coming out before starting HRT if you are still living in the house. I can understand why you would be fearful of coming out first, that is always a huge step, but if the first evidence of your intentions is a parent finding your hormones, they might feel betrayed.
I think Fathers tend to react more aggressively to the situation because one, they are guys and guys aren't always raised to show compassion or empathy, and two because having a son means the family line gets passed on eventually. if the child is F to M, then its their little girl and they tend to be more protective.
Give your Dad a little time to cool off and then ask if you can have a reasonable conversation with him. The more adult you act, the better. If he is still unreasonable, you might want to consider going to a therapist who is familiar with transgender issues and see if together you can find a way to get through to your father.
People in general tend to feel off balance when they find out that something is not what it appears to be. If your father didn't love you, he probably would not have had the reaction he did. It wouldn't matter to him. Such a prolonged outburst makes me wonder if he is either very uncomfortable with alternative life styles or had an experience somewhere in his past. A memory that was triggered by what he found.
sam1234
