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.