I have to disagree , cramping alone is not a sure indication of labor . If the cramping does not go away or you find unbearable I would consult your doctor or call labor and delivery and see what they suggest . It may be your ligaments stretching I had cramping around that time although everyone is different . Are you having any other symptoms? Bleeding ? Try taking a tylenol and see if they subside . Is baby still being active ?
Are they really painful? Or just slight cramping? Slight cramping is pretty normal, painful cramping is not. I would drink a glass of water, and lay on your left side for an hour, see if it goes away, if not call your doctor immediatly, could be early labor.