I am a fourteen years old female having severe pain in the left side of my lower abdomen please what can it be?

See Physician: Pain in the left lower abdomen can be due to several things given your age. Constipation is a VERY common cause of abdominal pain in adolescents. Other causes in adolescent females include ovarian cyst, a ruptured cyst or ovarian torsion (when the ovary twists and cuts off blood flow to itself), and infection in the pelvis . If the pain is severe, see a physician as soon as possible.