Where does amniotic fluid come from? |
Amniotic fluid (''waters'') is produced early in pregnancy by seepage of fluid through the developing fetus''s skin. After about 16 weeks or so, the baby''s kidneys start working, producing urine which is passed into the space surrounding the baby; this is amniotic fluid. It is constantly replaced, with the baby swallowing fluid and then passing it out as urine. |