I'm straight but I was attracted to a penis while watching porn?

the last like week its been happening where I was kindof attracted to the penis while watching straight porn...then today I was just attracted to it for some reason. The thought of me actually having sex with a man repulses me, but I kindof don't find the women in porn attractive that much anymore because its just not as interesting as it used to be, its redictable and I know everything. I think the reason I was attracted to the penis was because I got sortof bored of the women and found something else to focus on and since it was like new/ and I felt like I shouldnt be doing it it sortof turned me on in a very weird way... I find girls my own age attractive though but not all the ones in porn. I don't know, what should I do? I need some re assurance that I'm not gay. I've only had a few girlfriends and I havent had one in over a year so maybe I just need to get out and get a girlfriend..