Is it normal that when i think about straight couple i feel disgusted?

I am a straight woman, but somewhere deep inside me I feel I am a man who likes men. I think that's where my disgust come from.
Whenever I see or think about straight people together I want to puke. My best friend is straight and has a girlfriend, not so long ago I got to know they're having sex (they're 15). When I got to know it I felt disgust. And it's not because he's my best friend or whatever, it's always like this. I tried watching porn where were straight people, but at the moment I wanted to puke. I also feel disgust against women, I think women are disgusting and I hate myself because of it, because I am one of them. I think vagina, breasts or just the thought of having a child growing inside of them is disgusting. (I am not a native speaker, so I am sorry for any mistakes)