Anxiety?

I have an anxiety disorder, due to a mistake in my medication; however, I just would like to know if anxiety can cause this. Occasionally I have intrusive thoughts (which I know is part of anxiety), but yesterday I was speaking with a coworker, and she said something that bothered me & it got stuck in my head. It was an unwanted/uncomfortable thought, and I kept having a feeling as if I was forced to say it. So, my question is can unwanted intrusive thoughts give you a forced feeling to say those thoughts?