Anxious anyone?

Have you ever done something and then spent the next hours, days, wondering if you should have done it?  This happened to me today.  Without going into detail, I sent an email to a higher-up at my company.  I justified sending him the email because I was responding to an email from him.  It doesn't matter how hard I try to justify it, I still have that "needling" feeling that I shouldn't have sent it.  It has been a few hours now.  I keep saying little prayers that it was the right thing to do. Hoping that I haven't ruined a relationship.  Now I just wish that I felt good about it.  I have played over the words in my email.  They were very carefully written.  Still.....

Hate that icky feeling.