Cheer stunt accident

So I'm a cheerleader and in the beginning of June I went to a cheer stunt camp. I was a back spot and one of the stunts came down hard, the flyer landed on my shoulder and my back arched really hard and my lower back cracked. There was instant pain but I was able to move and get back up, ice helped and I was fine. But ever since that incident I can't stretch or bend my back far without it hurting and I don't know how to treat it. I went to the doctor and she said I might've injured a disk (no idea if I spelled that right) and those can take up to three months to heal. Does anyone know what I can do to help it heal and relieve the pain?