Does this make me a lesbian?

I was watching porn and accidentally came across lesbian porn. Initially I thought the character was a male but became suspicious and stopped masturbating. Anyway, I changed videos and finished. I was then thinking back and a thought hit me "did that feel right"? And now the anxiety has become excruciating. I can't stop trying to think back and remember if my HOCD was playing up (its usually on my mind anyway), I can't remember and when I think I've realized yes it was and therefore tricking me, my mind says "but what if it wasn't?", and the cycle begins again. I keep watching the video over and over again trying to figure it out. I can't relax, sit still or anything. Please somebody help me! I'm going insane. Surely if it felt right I would desire to watch more? I've never desired women sexually. I'm really scared, please help me Dr. Lane, or anybody?! PLEASE HELP ME, I THINK I'M GOING TO BE SICK