There you go, more evidence against your anxiety. You can get through and nothing happens despite your subconscious screaming it will.
I think it helps to make a conscious statement that you know you haven't done x (it would hurt like hell I would imagine if you did ) and to say to yourself that you accept that this is your anxiety playing it's tricks but that you also accept this is what anxiety does and you know it will pass so you aren't trying to push it away which only gives it more importance (negative reaction).
Then with the compulsive checking element, once you've made that statement, walk away to do something else. Get involved in something that will take over your mind for a bit, even mundane cleaning tasks, and let time reduce the anxiety.
One way I found helped with some stubborn compulsions was to do the check or touch but only once. I would do it longer than normal but say to myself that I am choosing to this and not being pushed into it by my anxiety. Then walk away and resist from there. I found this worked on some where cutting down the volume of checks just wasn't working.
I hope you feel better soon. The hard part if over now.