Re: What's going on?
There's not much I can really say, this is a common intrusive thought. Be careful to see it as OCD unless you have compulsions. Alot of people make the mistake of labelling it as ocd just because.
Anyway for one Stormsky is right only you know if you are gay. I know this probably scares you but don't be afraid. If you are gay then it isn't the end of the world.
But if this merely is a obsessive thought then thats somewhat trickier to come to terms with. Watching gay pornography doesn't necessarily mean you are gay. I once had a counsellor who told me she believes there is a scale and at one end is 100% homosexual and the other end is 100% straight. She said she did not believe anyone is 100% either way. Even though people tend to believe they are. I would say if you find your girlfriend attractive and have sex with your girlfriend then you are attracted to girls. You seem to be just focussing on the negative of being attracted to males rather than looking at it objectively and seeing that you are attracted to females.
I hope this makes you feel better xx
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When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, "I used everything you gave me." ~Erma Bombeck