Apparatus, methods and kits which, when installed or used, occlude or partially occlude a cervical canal, the internal opening of a cervical canal (cervical os), or a uterine side wall rupture location, such as to inhibit or prevent bacterial access and retard leakage of amniotic fluid resulting from PROM. The present apparatus can include an expandable support member of a biocompatible and non-toxic material. In some examples, the support member can include a top portion having a first diameter and a bottom portion having a second diameter less than the first diameter. In some examples, the support member can include an expandable stent of a suitable length and uniform diameter to be inserted in a non-dilated cervical canal or transabdominal access route. In various examples, the apparatus further includes a fluid-resistant fabric, polymer, substance or other material placed over at least the top portion of the support member.