Does the noncustodial parent still have to pay child support if child becomes pregnant?

Depends on the age of the child. If they become pregnant and eligible for their own government financial assistance then possibly NO. But if they are pregnant with no government assistance then YES. I believe that child support must continue until the child is old enough to have graduated from high school. Age 17 approx, regardless of circumstances... Besides, if your daughter is having your grandchild she will need financial help regardless.