Thank you for your question. You do need to be examined by your gynaecologist to determine the cause of the pain. I doubt that the kidney stone is the cause. Rarely a small ureteric calculus can cause pain but it need not be related to your period. Pain around the time of the period points to a congestion related cause or sometimes  endometriosis. Your gynaecologist will take a detailed history of your pain and then examine you. You may need further tests like an ultrasound examination and urinalysis too. Best wishes