What word?

You lock the door of your house, and then walk about 50 meters on the road and then suddenly you get this feeling - "Have i locked the main door? Or did i forget". So you walk back to check.

Same with your car, you know that you've used the remote and pressed the LOCK button. But then after walking a few yards away, you still get this feeling - "Did it actually lock. Let me check it once more."

Is there a word to describe such a thought in your mind? I am not looking for standard OED words, but there must something like the sniglets.