<s>[INST] I have just finished my period at which time I had alot of lower back pain. I have only ever had lower back pain with my period on one other occasion. It has now been two weeks since my last period ended and im still having lower back pain What could this be? [/INST] Hilow Bach ache that starts with menses is suggestive of some infection in your genitourinary tracti would advise you  for urine test urine culture and sensitivity testmeanwhile have plenty of fluids to keep yourself hydrated maintain a straight spine posture while workingdon't use pillowsleep on a hard beddo some stretching exercises and physiotherapy Hope this helps youRegardsDR BR Hudda </s>