Try to relax, try to distract yourself.
I do this:
I play video games
I smoke a sigaret with some friend and talk about stupid things
I try to figure out what i will do tommorow to keep on ompretending that i like my classmates
I watch a movie (in your case bad idea , all guys would spike you)
I play some guitar
I listen to music an try to imagine things i like or like how i wish everything was.
Mastrubate XD
Try to distract yourself a little, eat some sugar or chocolate, mastrubate, make jokes, talk to people wich understand you but try to talk about other things asswell(not only abou OCD)
If you realy want to get over this then you need to accept all possibilitys, that you are gay,straight,bi,a girl , a pedo, a hebephile, a old lady lover, a bowl of soup, human, an alien,....
You need to try and think like this: " i dont care what i am, i am myself and i like it"
Then you will be able to get over this

Ps: is SIAD down ?