Is it normal that i think about porn to climax during sex?

So I am a woman and have been in a relationship with a guy that I really like for about 5 months now. I was never able to climax during sex before about a month ago. I am 28 years old, and I am bisexual. I just started having orgasms during sex and I finally did it by manually stimulating my clitoris while having intercourse, and also I have to imagine scenes from porn that I thought were particularly hot. I still am in the moment and am paying attention to having sex with my boyfriend, but in order to climax I need to think about porn scenes. Often, these scenes were from lesbian porn. First off, is this normal to have to think of things I've seen in porn, gay or hetero, and second, is it normal to think of girl porn? I am very happy in my relationship and like having sex with men. But I can't help wondering if that means I'm gay?