Originally Posted by e.j.:
From what you've shared with us, you did the right thing. Take a deep breath and know that your report could be one step toward helping the kids who are enrolled in that day care. As boy mom advised, get out, get some fresh air, do whatever it takes to get your mind off the situation. If you start to think about it again, tell yourself, "I did the right thing" and then make a conscious effort to think about something else. With time and distance - and a new job - this experience will stop causing you so much anxiety. 
I forgot, the teacher I reported won't even be there tomorrow.