The best thing you can do is apply a temporary fix to reduce any discomfort. If a bracket breaks, which is a very hard thing to achieve on accident, your main focus should be to avoid additional complications caused by any choking hazards. If the bracket is loose, kindly slide the bracket toward the tooth it's supposed to move and leave it there while you reach out to your orthodontist. Poking wires are easily fixed with the help of a blunt object or a pair of clippers.