Amniotic fluid is what fills that comfy pool your baby-to-be floats, flips, and lounges around in for nine months. Aside from cushioning him from trauma, it also helps to maintain a constant temperature in the womb, prevents against infection, and supplies him with plenty of nourishment. In a non-complicated pregnancy, you'll naturally produce the perfect amount of amniotic fluid to keep your baby comfy and healthy. But sometimes, you'll have too little amniotic fluid. This condition, also called "oligohydramnios", occurs among about 8 percent of moms-to-be, most of whom go on to have completely normal pregnancies. However, the condition does raise red flags as it sometimes accompanies fetal defects--such as problems in the digestive or urinary system--and it may restrict your baby's growth in the womb.