Use pillows to hold positions. Use ice or heat depending on your needs. Many people do not like ice on their spines. Begin anti-inflammatories i.e. aspirin, Motrin, Advil 4. Go to the ER or see your doctor.
Most back injuries occur when bent over.
As a result, it is painful to stand up straight. If you tear the outer fibers of the disc you may have some immediate tingling and numbness. If you are at a show and injure your back do not run into town and have someone manipulate it. A fresh injury needs at least 48 hours to calm down. The way you present right after the injury may not be how you present a day or so later.