I have an Obsessive Compulsive Personality, which has more recently developed into OCD.
I too experience unwanted 'visions', usually involving family/pets being thrown against glass, drowned, blended etc. (Of-course I find these very disturbing and upsetting).
I also sometimes see maggots and germs all over my food, and as a result have lost weight.

I consider the 'food visions' to be more OCD related (as I'm an obsessive cleaner, and am very afraid of dirt on food), and the others Psychotic (I experience other 'symptoms' and have been referred to Early Intervention).

So I guess it really depends on what these 'thoughts and images' involve.

Sorry if this isn't really helpful, but reading your message is somehow comforting as I experience the same stuff and you've made me feel a little less crazy about it(if that makes any sense).
Sorry if this sounds stupid.

P.S.It would be a good idea to talk to your CPN/GP/whoever helps you with your OCD. Maybe they could help answer this.

GoodLuck