I think I am a pervert, thought the word might not be exactly what i mean it

I'm actually a very good person, but sometimes (not always) i get those strange filthy and k**** feelings and thoughts, but in reality I would never do anything like that

does that make me a sick person?

I will try to confess more and more here, so please do not judge on me based on what i say, try to analyze and understand me before you do such thing

Thank you