Why is it important to know the gestational age?

At specific stages of the pregnancy, certain things are expected. For example, first hearing the heartbeat, or feeling the baby move, is expected to happen at a certain time of the pregnancy. How the pregnancy is going can be judged as normal or abnormal only when the age of your baby is correctly known. It is very important to know your baby’s age if problems occur and the baby needs to be delivered early. It is also important to know when a baby is overdue so the health of the baby can be more carefully watched.