I too had HOCD 10 years ago, and i didn't know what was going on with me. I had always masterbated to women and liked looking at women in playboy and porn in general. I also enjoyed having sex with women and not once did i ever look at a guy in a sexual way. Was i repressing my sexuality? No.

I developed pure-o ocd 10 years ago, and the first symptom was hocd. As a result, my drinking of alcohol turned me into alcoholic, but i thought drinking wasn't the problem. 'You'd drink too if you had always liked women but were turning into a homosexual'. But once i started going to AA meetings and getting sober, my hocd got under control. So i think you could be addicted to porn, which in turn may be contributing to your hocd, but this is just speculation.

Are you on medication and/or psychotherapy? These would definitely help not just your hocd but ocd in general. Anyway, take care and may the force be with you.