in the middle. What is this? I hadn't picked up anything heavy and I woke up perfectly fine this morning. I was standing talking when this pain hit me like lightning through my back concentrating in the middle of the back. I couldn't move for a several seconds. Just moving my leg to step back and I couldn't due to the pain. It felt like I was being scorched. A minute later the pain was gone. As soon as I sit down my back ached again but nothing like before. It felt sore. What is this? What is due to? I was seriously doing nothing. Nothing of the unsual all day. There's no way I could have strained my back.