A larger than expected fundal height could be a sign of fetal macrosomia. Excessive amniotic fluid (polyhydramnios). Having too much amniotic fluid — the fluid that surrounds and protects a baby during pregnancy — might be a sign that your baby is larger than average.
What does it mean when your stomach is measuring big during pregnancy?
There are a variety of reasons why your belly could be measuring large, like swelling or fluid retention (a common problem during pregnancy) or simply being a bigger woman before you became pregnant. The most serious cause of having a too-large tummy, however, is gestational diabetes.