What are the major symptoms of oligohydramnios?

Decreased fetal move. Decreased fetal movement is the typical symptom associated with oligohydramnios. This is a potentially serious pregnancy complication and prompt/expert medical care should be sought!
Decreased movement. Unborn babies with less fluid usually exhibit decreased movement compared to those weigh normal fluid levels. In addition, the size of the pregnant belly may lag behind in size. The diagnosis is confirmed by ultrasound.