What should you know about previable rupture of membranes?

The membranes form the sac that holds amniotic fluid around the pregnancy. When they rupture before labour and before the stage when a baby can usually survive outside the womb, the event is described as previable rupture of membranes. Fluid leakage may be continuous, intermittent, or noticed only as damp underwear. Urine and normal discharge can look similar, so appearance alone cannot confirm the cause. In hospital, clinicians may use a history, examination, and selected tests to assess the fluid, infection, bleeding, contractions, and fetal wellbeing. The plan depends on the pregnancy and the findings.

Call your maternity unit immediately or attend the hospital they direct you to. Wear a clean pad rather than a tampon, note the colour and smell of any fluid, and avoid intercourse or inserting anything into the vagina until assessed. Do not delay care because the leak is small or has stopped. The team may recommend observation, monitoring, or treatment, and will explain the potential benefits and burdens of each option. They can also discuss emotional support and specialist input. If infection or labour develops, the care plan may change quickly.

Get urgent maternity help for fever, chills, worsening abdominal or back pain, regular contractions, vaginal bleeding, foul-smelling fluid, or feeling weak or faint. Call emergency services for collapse, severe pain, heavy bleeding, or breathing difficulty. Reduced fetal movement should be reported promptly when you have reached the stage at which movements are expected. These signs need assessment because they can accompany infection, bleeding, or preterm labour.

Ask how the membranes will be checked, what symptoms should trigger a return to hospital, how infection and fetal wellbeing will be monitored, and which choices are available at this gestational age. Ask who to call overnight and whether you can speak with an obstetric, neonatal, or counselling specialist.