Am I really gay?!

Hello guys,
I'm 14 years old and I got diagnosed with HOCD.
I don't have to tell you that I don't want to have sex with males or be in a relationship with a male, so I'm straight. I'm feeling very well right now. But I have a "fetish" that keeps making my thoughts coming.
I masturbate in a shirt or a suit and look at pictures of shirts and ties. I can masturbate to straight porn too. But I just don't want to have sex with men. Even if they are wearing suits. I don't sexually like penisses! Guys, I need to know what you think and what I can do against this 'fetish'.

I hope you guys will help.
Thank you!

I wouldn't worry about it.Shirts and ties don't have a gender- they're inanimate objects!