Diagnosis of waters breaking early: what to know

Premature rupture of membranes means the amniotic sac breaks before labour begins. Tell the maternity team when the fluid started, its colour and smell, how much has passed, and whether contractions, bleeding, fever or pain are present. A clinician may use a sterile speculum examination to look for fluid, with a swab or other test when the diagnosis is unclear. Digital vaginal examinations are generally avoided unless needed because they can increase infection concerns. Temperature, pulse, blood tests, the baby’s heart rate and ultrasound findings may help assess infection, fluid volume and wellbeing.

Wear a clean pad to observe the fluid and note its colour; do not use tampons or put anything into the vagina until assessed. Contact your maternity unit promptly, even if the leaking is small or stops. Depending on pregnancy stage and examination results, care may include observation, antibiotics, antenatal corticosteroid injections, hospital monitoring or planning birth. Read about [Antenatal Steroid Injection](/treatments/pregnancy-and-birth-care/antenatal-corticosteroid-injection/) and [Induction of Labour](/treatments/pregnancy-and-birth-care/induction-of-labour/).

Seek urgent maternity assessment for fever, chills, worsening abdominal pain, foul-smelling or green fluid, vaginal bleeding, regular contractions, feeling faint or reduced baby movements. Call emergency services for heavy bleeding, severe pain, collapse or difficulty breathing. Do not wait for a routine appointment if you think your waters have broken.

Ask how the fluid leak was confirmed, whether there are signs of infection, how your baby will be monitored, which activities or examinations to avoid, and when to return. Ask how pregnancy timing changes the plan, including the role of steroid injections, antibiotics, observation and induction.