There is amniotic fluid at 10 weeks of pregnancy, usually around 30ml. It is normal to have between 5ml-10ml of amniotic fluid at 8 weeks of pregnancy. Amniotic fluid in the early stages of pregnancy is mainly due to dialysis fluid from the mother’s serum that enters the amniotic cavity through the fetal membranes. After 16-18 weeks of gestation, fetal urine becomes the main source of amniotic fluid. In the middle and late stages of pregnancy, amniotic fluid serves to protect the fetus from extrusion and prevents the occurrence of fetal malformations and adhesions, as well as protects the mother by reducing the discomfort caused by fetal movement. After rupture of membranes at full term, amniotic fluid lubricates and cleanses the vagina, and also reduces the incidence of infection. If the amount of amniotic fluid is less than 300 ml in the later stages of pregnancy it is called oligohydramnios. More than 2,000 ml of amniotic fluid at any point in the pregnancy is too much amniotic fluid.