Being pregnant for the first time can pose lots of questions. One particular one is how big is my baby? Many women will not show a bump until they are well into the second trimester. It can be difficult to get an idea of how big the baby is. There are fruit analogies that help parents to visualize how big their baby is. However, a pregnancy scan is the best way of knowing for sure how the baby is growing. It is also a great way to bond with the baby.