My left side been hurting in cramping pain for a whole what could it be?

More info . hi, the info you have provided is too vague. the left side of our body has too many parts, which part does it hurt? Chest? Abdomen? Back? Leg? Head? .
Where on your. left side does it hurt (chest abdomen., arm leg....) How long? constant? Need details. Advise you to see your doctor.