How can i see if im gay? i have HOCD?

So i sat down and turned the gaytube on and watched literally every potential fetish for like 3 hours... not one ounce of chub. i masturbate actually not even to straight porn mostly just to female striptease.. i dont like seeing the guy ******* the girl i would rather look at her body ( is that gay)... how else can i see if im gay (im not going to go pork a dude). am i being a little over obssesive. the reason for this is like i read somewhere that some boys are turned on by gay porn and im terrified that one day i will be turned on by it. are those dudes just closet gays?