<s>[INST] For the last 3 days Ive been having sharp pain in my left ovary (or what it seems like).I am 27 y.o. my mentruation is due sometime next week however this doesnt feel like the normal dull, achy pains, its more of a sharp pain, especially when I sit down. Should I be concerned? [/INST] Hi. Thanks for your query. Read the history and understood the problems. Yes, you should be concerned. This is because your history is very specific of a sharp pain in the left lower abdomen / pelvis, you are 27 years-young woman, menstruation is due next week. The probable causes are:-Twisted ovarian cyst-Salpingitis- Lower Ureteric stone and ITII would advise you the following:Urgent ultrasonography of the whole abdomen and pelvis. Examination by a Gynecologist Investigations related to the blood, urine and stool. These will help to get a specific diagnosis and plan for a treatment. </s>