Am I gay or bi or something? Weird experience

Well I'm 18 and all my life I've had a lot of sexual attraction to women, like strong urges of wanting to have sex with them, find them really attractive fantasize about them all the time, so I know I'm not 100% gay. Infact I've never felt any of those feelings for guys, and could never see myself in a relationship with a guy and I've watched gay porn a few times and it really kind of grossed me out, however recently I masturbated to bisexual porn where one guy was entering the other and it actually turned me on quite a bit,even fingered myself during it. Felt a lot of regret after that.. could it maybe just be the taboo turning me on? Or maybe I'm just a little gay? Burnt out on regular porn so I needed something different? Idk this is kindof weird for me. I don't really care if I am bisexual, I can accept that, but I would just prefer not to be. Is there actually a thing where people are just curious?