Welcome to the gastroenterology community! Could you be constipated? Are you having any more gas than usual?
From wikipedia -
Important organs of the left lower quadrant include part of descending colon, sigmoid colon, left ovary and Fallopian tube or left uterine tube.
If abdominal pain or signs of peritonitis are localised in the left lower quadrant, the suspicion is increased for such conditions as colitis, diverticulitis, ureteral colic or pain due to ovarian cysts or pelvic inflammatory disease. Examples of tumors in the left lower quadrant include colon cancer or ovarian tumor.
You should check in with your doc as this has been ongoing for a week.