Hi Umer, The lower back pain, most frequent causes can be: -Musculo-skeletal, when the pain doesn t irradiate in the thighs and knees -or from pinching of a nerve on his way to the limps, who may give this pain who gets spread on the way the nerve is. In your case, the fact that its getting worse, and not better, looks like the muscular spasms you maybe had before, is complicated with a nerve pain. The most important thing is to identify who is the factor that aggravates the pain, and doesn t allow to get better. Like a specific movement you are doing in your job, or lifting heavy weights in the wrong way, or even a new evaluation to the doctor after a new physical exam since 7 years is a long time. Hope this helps, Feel free to make questions if anything unclear.