Hello,
Cause of pelvic cramping could be due to kidney stones, pelvic infections, urine infections, twisted ovarian cyst or rupture of ovarian cyst,
appendicitis or any other referred pain due to other organ infections. Get evaluated for all these causes to confirm the diagnosis.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor.