nagging feeling

Again the nagging feeling that the answer was out here overwhelmed her.

And something else as well: the nagging feeling that the law was wrong.

So you are not plagued by a nagging feeling of doing without.

So had the nagging feeling that he was missing something.

He still had that nagging feeling of having forgotten something.

And yet there had been a small nagging feeling that something was not quite right.

It was the nagging feeling that I didn't know whom to trust.

But he had a vague, nagging feeling that something wasn't right.

But he had a nagging feeling there was more to the story.

No matter what the action in which he was engaged, there came the nagging feeling that someone might be watching.