This is OCD. I just started treatment for OCD a few weeks ago, and as part of that treatment was recommended this book: The OCD Workbook. One of the forms of OCD listed reads like this:
Quote:
Pure obsessionals experience unwanted, intrusive, horrific thoughts and images of causing danger or harm to others. The themes are almost always of a violent or sexual nature. Or they may have unwanted thoughts of acting upon a sexual impulse toward others in a manner that is clearly disgusting and repulsive to them. We call this type of OCD pure obsessions or "Pure-O," implying the presence of obsessive thoughts without accompanying overtly performed compulsions. Recent investigations of this type of OCD have revealed that most people with pure obsessions do indeed perform compulsions, but they are subtle, covert behaviors, such as mental compulsions or rituals.
Having read more of the book (I'm not going to start typing out more than that) it sounds like a couple of people here have Pure Obsessional OCD. If you've got a therapist or other professional you go to, I'd talk to them, if not, get yourself to your doctor and say you want a referral to an OCD specialist. This is treatable. You don't have to live with it.
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