Hi.i M Searching About Amnion Liquid.i Am An Engineering Student

hi.i m searching about amnion liquid.i am an engineering student and i have a search about biofluid.i wonder what should be the pressure inside the amnion chorion.i think the baby live with mothers blood circulation.and it has 120 mm hg pressure.and baby has a sensitive point on his head.and this should be prevented from too much pressure.can u answer please.thank you