Yea for the past 12 days I've had lower back pain, it started with sharp sudden pain all over my lower back but it got better while I walked to work, before yesterday I felt no pain then I did 5 minutes of punching excersice and it came back a bit, then yesterday morning I felt fine so I went to work and when I got home it was bothering again, I'm afraid it could be a herniated disk or some sort of disk problem.