where does amniotic fluid come from
The amniotic sac (bag) inside the uterus holds your growing baby. It is filled with amniotic fluid. This sac forms about 12 days after getting pregnant. In the early weeks of pregnancy, the amniotic fluid is mostly water that comes from your body.After about 20 weeks of pregnancy, your babyâs urine makes up most of the fluid. Amniotic fluid also contains nutrients, hormones (chemicals made by the body) and antibodies (cells in the body that fight off infection).he amniotic sac (bag) inside the uterus holds your growing baby. It is filled with amniotic fluid. This sac forms about 12 days after getting pregnant. In the early weeks of pregnancy, the amniotic fluid is mostly water that comes from your body.