Need serious help... I'm questioning my sexuality

i am a gay man and i accidentally masturbated to straight porn. i was browsing a gay porn site, so you know, i figured there wouldn't be any women in my gay porn. i found one video whose thumbnail looked promising so i clicked on it and it started mid-sex. the bottom was facedown into the bed in some black lace dress. that should have been a big warning sign, but i assumed it was some sissy fetish thing. not my cup of tea, but the top was hot and really going to town on her so i stuck around.after the guy (and i) finished, the girl sat up and that's when i saw it... her titsyou should have seen my face. a visage of true terror. i just sat there in shock, contemplating what i had just done. so I need to know, am I still gay ??