Come on Lauren, don't focus on this failure! It is common to be afraid after a fall! Don't worry, I know you're a great rider, you will overcome your fears very quickly. Work with a calm horse on basic exercises, when you will turn up enough self-confidence, you will be ready to ride again this young horse!
It happens to everybody! Your horse is young, it is normal he reacts this way. Trust your horse and trust you! For the moment, you should go back to work with a horse you know really well and trust and train with him until you feel better. Do no burn the steps! ;)