I certainly struggle with intrusive thoughts. Mostly it's self harm- if I think about something I did wrong or if something bad happens I immediately think of cutting. Mind you, I haven't cut in probably ten years, but those thoughts still pop up almost daily.
I think it's all about the intent. I mean, if you have these thoughts and really struggle to not act on them, that's more dangerous. I would certainly talk about it with your therapist or pdoc.