I have lower back pain on either side since a week. pain is a more when i get up in the morning. and then it lows as i get to routine work daily.

Low Back Pain: Very common for humans to experience back pain. Acute onset of back pain usually resolves in 4-6 weeks. If pain isn't improved, worsens, radiates into legs, causes tingling and numbness into legs, weakness of legs, associated with numbness in the perianal area, bowel or bladder problem, fever, chill, unexplained weight loss, of pain while lying down regardless of position seek medical evaluation.

Back pain: The back pain can be caused by muscle strain, spinal stenosis, ruptured disc, nerve impingement ... It sounds like you might develop some arthritic pain. If your pain persists, you should seek help from a health care provider. You might benefit from a comprehensive evaluation.