Thanks for your query.
Please let me know :
-Do you have this pain maximally after waking up in morning and it decreases gradually with work or does it increase with work and decrease after rest ?
-For how long are you having this pain?
-Do you have pain in other joints too?
-What are the other symptoms you have ?
You will need to have XRay of you lumbar region done.
Some blood investigations may be needed.
Please get a check up from an Orthopedic surgeon.Don't neglect.
Dont use over the counter drugs...Take medicines only on advice of your doctor.
You can apply diclofenac
gel locally for pain.
Hope this helps.
Update here how you stay.