Came to full draw on a mature doe, the arrow popped off the string immediately, and as I began to let the string back down , my release came loose, and dry-fired my bow. KaPOW! I'm the bozo Benny Hill of bowhunting, I chuckled to myself, as my string dangled in the cold breezy air. On top of everything on my plate this week, I've got to get my bow fixed. LOL. So, I learned an arrow knocked before daylight can get loose three hours later and a release on a d-ring may not be as snug as you think when attached in a hurry. Check and re-check how secure your nock is on the string, guys and gals, unless you want to duplicate my Barnum & Bailey circus act at the moment of truth. Woulda' coulda' shoulda' been my second deer kill ever.
Been there, had it happen a few months ago when I was practicing. It happens to everyone as some point. Hope the bow is ok.