When you feelingly meditate on it, it subsides faster than if you attempt to ignore it or focus elsewhere. Therefore, the first and foremost thing to do is rest with your eyes closed and do feeling meditation. You will find that your body most likely does not want to metabolize food because that takes energy. Your body wants to concentrate all of its energy repairing the back. However, if you find you feel hungry, eat foods cooked as little as possible, preferably raw.
Raw foods are the easiest for the body to metabolize.
You must continue to rest and feelingly meditate on the pain until you no longer feel it. It may take days, weeks or months. The more time you can devote to resting, the quicker you will heal. You definitely will heal completely. If you become impatient and decide to apply any type of treatment, you will only be interfering with the body's own healing process.