what does it mean if the fluid increases while pregnant
About 1 out of 100 (1 percent) pregnant women have too much amniotic fluid. It usually happens when fluid builds up slowly in the second half of pregnancy. In a small number of women, fluid builds up quickly. This can happen as early as 16 weeks of pregnancy, and it usually causes very early birth. Last reviewed: June, 2011. Polyhydramnios is when you have too much amniotic fluid. Amniotic fluid is the fluid that surrounds your baby in your uterus (womb). Itâs very important for your babyâs development.