Hey, I have suffered several terrible falls off my horse, the first two seriously injuring me, and the last one psychologically.
I was scared to get back on my horse, I tried to and I just sat there, my horse lifted his head to check out something in the distance and I had a panic attack, I was crying and hyperventilating before I walked around the arena one full time, I had to get off.
But I couldn't give up on my horse, I would force myself on, if only to stay in a small circle in the indoor ring where I was comfortable, but I would get on. Now, about a month later I've regained most, not all, but most of my confidence on my horse. I say give it time, what really urged me to get back on was missing riding.