I had a similar situation. I walked in on my mom "not watching" Dr. Phil (she was on the computer, very distracted) and it was an episode about trans people. A woman had brought her daughter on the show as well as her husband (or rather wife), the MtF in question.
I felt really horrible watching it because the mom and daughter were in tears sobbing about how they wanted their father/husband back, but the MtF (I never learned her name, sorry) was obstinate about being who she was and who she'd always felt she'd been. And I don't blame her. The irritating part was the mom, daughter, and doctor Phil each ganged up on her and were all like "take our feelings into consideration wah wah you're being selfish, I don't understand this trans thing." I felt so bad for the MtF woman, not so much for her family since they'd decided to bash her on tv.
I turned to my mom and began voicing how horrible they were being to her, then it occurred to me to ask her what she thought, and my mom goes "Hm? Oh, I think they're crazy. All transgendered people are crazy, there's something wrong with them!"
That almost set me back but I realized she didn't know the weight of her words and in doing so did not realize that she was calling her own son crazy. Because she didn't know yet that I'm not her daughter, I'm her son. I came out to her regardless, she thinks its a phase but loves me either way, and WOW doesn't think I'm crazy like I thought she would!
So don't take too much of what your dad said to heart

It'll just make you crazy wondering how he feels about you, when he's just saying things he knows nothing about like my mom did. People say a lot of things they don't mean behind the veil of ignorance. I'm not saying your dad is ignorant, just that he doesn't know yet

Don't be too upset!