At 22 weeks amniotic sac protrudes into the vagina there is a need for birth control and at 22 weeks amniotic sac protrudes outside the vagina there is no need for birth control. Amniotic bursa protrusion is a disease condition encountered in pregnancy when the pregnant woman’s cervix is not functioning well and the cervical opening is lax, the amniotic bursa can protrude outside the cervix under gravity or even migrate into the vagina, which can have an impact on the life of the fetus. If the amniotic sac protrudes into the vagina at 22 weeks, the fetus can be preserved by changing position, elevating the hips and performing a cervical cerclage. 22 weeks amniotic sac protrudes outside the vagina, the vagina is a bacterial environment, the fetus has long stayed in the relatively sterile environment of the uterus, and suddenly went to a bacterial place, even after retracting it will cause infection, which will have an impact on the environment of the fetus’s growth, and it is more difficult to preserve the fetus. When you find 22 weeks amniotic sac protruding symptoms, you should go to the regular hospital obstetrics and gynecology consultation, timely treatment for the success of fetal preservation to increase the chances.