If your baby falls out of the high chair.
First, always make sure that you have taken every precaution like straps, snaps, trays in place, etc to ensure your child's safety. Any mom will tell you that it takes only a split second for something to go terribly wrong even when you're sitting right there. If your child has had an accident, call your doctor and let him know that you are bringing your child in immediately. Even if there are no signs that your baby is hurt, there may be something on the inside that you cannot see. It is imperative that your doctor gives your baby a full check up.
Next. Understand what went wrong and that it was a mistake, forgive yourself and move on. Strap them in every time!