Weird back pain?


Anyone else have a weird pain in there back? It’s like the lower part of my back/butt, like beside my spine. It doesn’t feel like a muscle pain, more like a sharp pain and like it needs to be popped? It makes it to where I can’t really move my leg, like I can only lift that leg maybe five inches off the ground or my knees will buckle and ill fall. It happens for a few days at a time...anyone know what it might be from? Or how to help it?