Yes, I have had that experience. And how do we know it just "popped up"? Because we can watch our own consciousness, and we can see that it did not originate at the level of conscious thought.
So you mean unless you think an idea in words, you are not doing anything conscious? Does that mean I play a real-time video game entirely unconsciously? Because I don't think "I need to go there and do this" in words, I just do it.