abdominal cramping at 30 weeks?

Hi,
Welcome to ehealthforum,
It is not normal to have abdominal cramps in advanced pregnancy (especially if they are increasing in intensity or if they are associated with spotting/bleeding, or with reduced fetal movements). Do not ignore your symptoms. Visit your gynecologist/obstetrician at the earliest to see if uterus is active. You might need to be put on uterine relaxants to help with carrying on pregnancy smoothly (and prevent miscarriage). Drink plenty of water. Avoid heavy work. Take adequate rest and maintain a good diet.
Take care.