Calling it HOCD can make it worse. This isn't really OCD. It's more like a phobia. And the truth is, even if you did it and liked it that alone wouldn't make you a lesbian. We all like sex. We all like orgasms. What makes a person gay is loving people of the same sex. Not just enjoying sex. It's very common to have these kinds of thoughts. They often occur when we're feeling insecure at a young age as you are now. Since it matters not whether or not you're gay, bi, or straight, it only matters because it's bothering you. If you're only attracted to guys, you're straight. If you try it and you like it and want to do it again, I guess you're bi if you're still attracted to guys. But so what? Now, life is harder if you're bi. Hard to maintain a relationship if you can't settle. But the problem you're having is these thoughts are becoming an obsession and bothering you. Not the thoughts themselves. We all have all kinds of thoughts. We don't act on most of them. It's the mind being a mind. If it continues to bother you and you can't shake the obsessive thinking, there's something else going on and you might consider a therapist. They can be seen online. Peace.