Why am i getting cramps in the left side of my abdomen? i got my period 11 days ago.

Mittelschmerz: One possibility is mittelschmerz, or light cramping associated with ovulation. A small percentage of women can actually experience minor pain around the time of follicle rupture - typically 14 days prior to the beginning of the next period. This is simply one possibility among many and should only cause minor discomfort.

See your physician: Left lower quadrant abdominal cramps may be symptoms of diverticulitis, left ovarian cyst or twisting if the ovary, a abdominal hernia, a tumor of the abdominal wall muscle, an infection or just minor muscle spasms.