Sexual and violent thought infection

I hear violent and/or sexual voices about women. Sometimes it’s that woman's voice - saying inappropriate things that I don't want to hear. 

I brush them aside but they are persistent and they conjure up images in my mind like a virus causing you to get sick. Like if someone says "pink elephants" and you automatically picture a pink elephant.

I hear my voice too, but it doesn’t seem to be coming from me – as though it’s being injected by someone else.

Am I a Monster?

“Would you rather live as a monster or die as a good man?” – Shutter Island

I hear constant voices telling me to do bad things. They excel at distressing me by putting violent and sexual images in my head. But why are they so distressing and if they are ‘just thoughts’, then why can I not simply brush them aside?

They are crippling because I am basically unable to even try and comprehend a situation that is out of my comfort zone for fear of them occurring.

The question is am I worried that what the voices are saying is what I want to do, and if so does that mean that I’m a monster?

Could the way that I act now simply be a controlled, watered-down version of the real me, which is really lurking under the surface waiting to break through when backed into a corner – even if it's a psychological one?

Incase you wanted more information about hearing voices:

http://blog.ted.com/2013/08/08/everything-you-ever-wanted-to-know-about-voice-hearing-but-were-too-afraid-to-ask/